(3GdYdGL HYTH GdbeM (B- (3cf WHjH faScs - (3hjfZehQ(B. (3Bfs ((3GdeDSSI GdJLGQjIs (3HjQhJs, 1973)
(3JQLeI HgLJ CHh GdMSfs
Keywords: (3GdYdGL GdTYHjs; (3GdbeMs