About 40 people protested yesterday Harvard's involvement with weapon research at a demonstration organized by the New American Movement at the Center for International Affairs.

The demonstration took place at the end of a lecture by Richard L. Garwin, a visiting professor in Applied Physics and a member of the Jason division of the Institute for Defense Analysis which does war research.

Garwin spoke on the "Military and Civil Applications of a Satellite Based Global Positioning System."

Garwin entertained questions at the end of his lecture on the morality of his involvement with war research and then terminated the seminar leaving most of the questions unanswered.

In a scuffle at the door, Peter S. McKinney, administrative dean of the Graduate School of Arts and Science, prevented a puppet resembling Henry A. Kissinger from entering the room after Garwin had left.

McKinney barred the "computer general" and the Kissinger puppet because he said "it would have been distracting."

Responding to a question as to why Garwin had been invited to the University, McKinney said "Harvard welcomes people of all beliefs, and the puppets are also welcome if they remove their heads."