RAWALPINDI, Pakistan, Dec. 20—Zulfikar Ali Bhutto was sworn in today as President and Martial‐Law Administrator of Pakistan, returning the nation to civilian rule for the first time since 1958.

Mr. Bhutto, who arrived here this morning from New York, assumed power from the out going President, Gen. Agha I Mohammad Yahya Khan. General Yahya Khan was forced to resign largely as the result of Pakistan's defeat by India in the war that ended last Friday.

[Authoritative sources in New Delhi said that the Indian Government was willing to negotiate with President Bhutto because he was a civilian and had come to power in an essentially democratic fashion. Page 14.]

Yahya's Retirement Ordered

By taking the title Chief Martial‐Law Administrator, Mr. Bhutto assumes full powers over both civilian and military, administration. Presumably, he will rule by decree until a full government has been formed.

Among the new President's first acts was an order for the retirement from the army of General Yahya Khan and six other ranking army officers whom he characterized as “the fat and flabby generals.”

Mr. Bhutto rose to power on a wave of national anger at the former President's handling of the war with India, which resulted in the loss of East Pakistan. The 43‐year‐old politician, who had been named Deputy Prime Minister and Foreign Minister by General Yahya Khan as the tide of war increasingly turned against Pakistan, is the leader of the nationalist — socialist Pakistan People's party. He previously served as Foreign Minister from 1963 to 1966.

Trial of Generals Uncertain

In a speech to the nation and a subsequent news conference, Mr. Bhutto said that General Yahya Khan still occupied the President's house and was not under house arrest.

But when asked whether the former President or other generals would be placed on trial, Mr. Bhutto replied: “That de pends upon the will of the people, and will be decided later.”

Mr. Bhutto asked that the people give him “a month or so” to work on a new constitution and other matters. He said he would begin tomorrow to appoint a temporary Cabinet that would be replaced when a democratic government took shape.

The new President said that his first task was to seek agreement with leaders of East Pakistan in creating a new government, and he denounced the current Indian military occupation of the eastern province.

He said Pakistan should have friendly relations with India, “but only on the basis of equity which would include removal of all Indian forces from East Pakistan, return to the agreement: of 1947 and settlement of the Kashmir issue.”

The two countries have long been embroiled in a territorial dispute over Kashmir. The 1947 agreement provided for the partition of the subcontinent, essentially along religious lines, when British rule of India was ended.

Crowd at the Airport

Mr. Bhutto flew here on the first civilian jet transport plane to arrive since the fighting ended. He was met by several thousand members of the Pakistan People's party, who cheered and waved flags praising “Chairman Bhutto and Chairman Mao.”

The United States Ambassador, Joseph S. Farland, also, went to the airport to meet. Mr. Bhutto but failed to gets near him as he debarked. Mr. Bhutto remarked to bystanders that he had come to reunite the country, and then drove off to the President's house.

He remained with President. Yahya Khan for about two hours and it was later announced that he had been sworn in during his visit.

Censorship of the local press apparently was lifted. Government officials announced that beginning tonight the blackout throughout Pakistan would be reduced to a brownout, in which lights could be used indoors pro vided curtains were drawn. Outdoors, however, inky blackness prevailed.

At his news conference, Mr. Bhutto declared: “I hate the name Martial‐Law Administrator and I hate martial law.”

“But this is a time of emergency,” he declared, “and I ask you to bear with me for just a little while as we prepare for full democracy.”

I Mr. Bhutto was asked if he intended to free the imprisoned Bengali leader, Sheik Mujibur Rahman, who was once his political arch‐rival.

He replied that “Sheik Mujib is not the most popular man in West Pakistan” and said that the people of West Pakistan must be consulted, informed and prepared.

The new President named Lieut. General Abdul Gut Hassan, the Chief of the General Staff, as acting Commander in Chief of the armed forces. General Gul Hassan, who had been one of the major critics of the Yahya Khan regime among the country's military leaders, was one of the first callers on Mr. Bhutto after he took office.

Mr. Bhutto announced that he was lifting the ban imposed recently by his predecessor on the small National Awami party.

He said he planned to hold talks with all political parties with a view to inviting them to participate in his Government. However, he did not mention the still illegal Awami League, the majority party of East Pakistan, which gained a national majority in the general elections held last December.

The new President was asked whether, in view of the de facto secession of East Pakistan, there were any real hopes of obtaining an agreement between East and West Pakistan.

He replied that the first step in building a new Government would be at least to make an attempt to bring the eastern wing back into Pakistan.

Addressing the foreign correspondents in his audience, he said:

“Let us forget the past. We have made terrible mistakes and Pakistan is in a mess—the worst crisis in our history. But we have been given a terrible bashing by the Western press and I ask you now to please get off our backs while we put our house in order.”

Mr. Bhutto, on becoming President, ended the outright military rule that began in 1958 when President Iskander Mirza resigned and handed over all power to Gen. Mohammad Ayub Khan, who as Martial‐Law Administrator then announced abolition of the post of Prime Minister. General Ayub Khun subsequently be came President and held office until April, 1969, when he turned over power to General Yahya Khan.

President Bhutto apparently has a strong mandate to gov ern and he commented tonight frequently that, although he has assumed full power, his election was not “capricious.”

He noted that his party had received a majority of votes in West Pakistan in the nation's first free election last year.

Violence continued to erupt in various Pakistani cities today as angry crowds showed their resentment of the way the war with India had ended.

Accusing General Yahya Khan of having mishandled the war because of drunken ness, they tried to wreck places where liquor was stored. In Karachi, crowds tried to break into the Intercontinental Hotel to get at the bar and burned down the local office of Aeroflot, the Soviet airline.