(3GdfXGe GdSGSji GdeUQi(B:(3GdJZjjQ hGdGSJeQGQ GYeGd GdeDJeQ GdGhd ddHMhK GdSjGSjI (B/ s - (3eQcR GdHMhK hGdOQGSGJ GdSjGSjIs; (3Ydi GdOjf gdGds ([S.N] : (3ecJHI GdfgVI GdeUQjI , s, 1988)
Keywords: (3GdYUQ GdMOjKs; (3eUQs; (3JGQjNs; (3GdGMhGd GdSjGSjIs; (3GdGQgGHs; (3GSQGFjds; (3KhQI (B23 (3jhdjh (B1952s; (3GdfGUQjIs