(3GdSjOI(B: (3GdaJGI GdfajSI (B- (3eSQMjI UjfjI bOjeI aj GQHYI aUhds - (3gSjhfL(B. (3S(B.Is ((3ecJHI eUQs (3GdbGgQIs, 1981)
(3JQLeI GfhQ GdeTQjs
Keywords: (3eSQMjGJs; (3eSQMjGJ eJQLeIs; (3eSQMjGJ UjfjI eJQLeIs