(3GdfGUQjI(B: (3GdHjQhbQGWjI hGdKhQI ai JLQHI (B/ s - (3GSYO YHOGdQMefs ([S.N] : (3eDSSI GdGHMGK GdYQHjI , s, 1981)
Keywords: (3GdYUQ GdMOjKs; (3eUQs; (3JGQjNs; (3GdGMhGd GdSjGSjIs; (3KhQI (B23 (3jhdjh (B1952s; (3GdHjQhbQGWjIs; (3LeGd YHOGdfGUQs