RAWALPINDI, Pakistan, Dec. 13—With Indian troops massing for assaults on Dacca in East Pakistan, there were increasing indications here today that Pakistan's general staff had decided to dig in and fight India to the bitter end.

Although a diplomatic spokesman said Pakistan still accepted the General Assembly resolution calling for a cease‐fire, it appeared to the diplomatic community here that India would accept nothing short of the outright secession of East Pakistan from the Pakistani nation, while Pakistan would accept no compromise of her sovereignty over the East.

All Western diplomats here assume East Pakistan will fall to the Indians soon, but there is growing concern that this will signal a new and bloodier phase in the war.

Up to now fighting between West Pakistan and India has been limited to shallow border penetrations and pin‐prick air raids. It is generally agreed that both sides can step up the war here in the West dramatically and probably will do so if there is not a quick ceasefire.

Diplomats at several embassies here, including the American Embassy, worked through the night. The United States, among others, is urging restraint on both sides as forcefully as possible.

But Pakistani Government sources indicate no ground for hope that anything approximating indirect bargaining with India is anywhere in sight.

Denial of Peace Offer

Spokesmen here today denied offering any kind of peace terms. It appeared that chances of a cease‐fire have become increasingly remote.

An army spokesman denied that an officer in East Pakistan had sent any communication to the United Nations dealing with a proposed cease‐fire. Yesterday, the same spokesman described the communication as having come from Maj. Gen Rao Farman Ali but as having been unauthorized.

Today, various Government spokesmen, including the new civilian Prime Minister, Nurul Amin, described a statement by the United States delegate to the United Nations as “timely and welcome.”

The delegate, George Bush, speaking in the Security Council, criticized India for having intervened militarily in East Pakistan and placed in jeopardy “the territorial integrity and political independence of its neighbor, Pakistan.”

A Rawalpindi spokesman said that the statement by Ambassador Bush had demonstrated “United States recognition of the aggression in progress against Pakistan.”

Military spokesmen said Pakistani forces still held 'large areas” of East Pakistan while acknowledging that sizable Indian forces were some 30 miles from Dacca. The port of Chittagong reportedly underwent an Indian naval bombardment.

‘Surprised at Question’

The Government spokesmen were asked, in view of Dacca's congested population of close to two million people, whether the Pakistani authorities might consider declaring it an open city.

“I'm surprised at such a question,” the spokesman said. “We shall go on fighting.”

An air force spokesman, asked if he knew how many civilian casualties had been caused by Indian bombing, replied: “I have no idea. We know right away when military installations are attacked but we can't keep track of what happens to civilians from moment to moment. You should ask local authorities.”

For the third day Rawalpindi was not subjected to Indian air raids. No significant changes in the West Pakistan and Kashmir fronts were reported here.

Meanwhile, the evacuation of foreign residents of Pakistan continued.

The United States Embassy has still not officially ordered an evacuation of Americans, but convoys of nonessential personnel and virtually all official dependents continue to leave by road for Afghanistan.

All foreign missions here are preparing for the worst, reducing staffs to the minimum.