US scientist says exile will hurt US-Soviet flow

The president of the National Academy of Sciences said Wednesday that the arrest and internal exile of Andrei D. Sakharov, the dissident Soviet physicist, will seriously harm future US-Soviet scientific exchanges.

In a statement dictated to the academy from China, where he is on a visit, Dr. Philip Handler called the Soviet moves to silence Dr. Sakharov "a challenge to further cooperation and an act of deliberate bad will".