(3cQI GdeVQHs - (3ehQZf(B. (3HjJQs ((3GdOGQ GdYQHjI ddYdhes (3HjQhJs, 1990)
(3JQLeI YeGO CHh GdSYOs
Keywords: (3cQI GdeVQHs; (3GdQjGVIs