(3GdYQhV GdYQHj h eMGhdGJ GdJWhQ h GdJLOjO ajg (B/ s - (3ehSi, ahRj SYOs ((3GdGScfOQjI (B:s (3OGQ GdeYQaI GdLGeYjI,s, 1991)
Keywords: (3GddZI GdYQHjIs; (3Yde GdYQhVs