(3JaUjd efgL Gdafhf ddYGe GdOQGSj (B1978-1979 s - (3GdeQcR GdJQHhj ddHMhK hGdGfeGAs ((3HjQhJs (3GdeQcR GdJQHhj ddHMhK hGdGfeGAs, 1979)
Keywords: (3GdJQHjI hGdJYdje (B- (3efGgL (B- (3Gdafhfs; (3efGgL (B- (3Gdafhf (B- (3dHfGfs