(3JbQjQ Yf GdJfejI aj GdYGde (B1986:s (3GdGfJYGT GdeJQOO hCaGb Gdfeh GdeSJeQ (B- (3GdJLGQI hSjGSGJ GdJSYjQ aj GdRQGYI GdYGdejI (B- (3eDTQGJ GdJfejI GdOhdjI (B/s - (3GdHfc GdOhdjs ((3GdbGgQI(B:s (3eQcR GdGgQGe ddJQLeI GdYdejI(B,s, 1986)
(3eQGLY HHdjhLQGjaI UaMI (B293s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdRQGYIs; (3RQGYI YGdejIs; (3JfejI OhdjIs; (3ehGO ZPGFjIs; (3SjGSI RQGYjIs; (3ONd efNaVs