(3JGQjN dHfGf efP CbOe GdYUhQ GdJGQjNjI Gdi YUQfG GdMGVQs - (3MJj(B. (3ajdjHs ((3OGQ GdKbGaIs (3HjQhJs, 1972)
(3JQLeI CfjS aQjMIs
Keywords: (3dHfGf (B- (3JGQjNs