(3GdGQgGH(B: (3GdJgOjO hGdQO Ydjg (B/ s - (3ehQjS(B, (3CQjcs; (3gh BdGfs; (3GMeO MeOi eMehOs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1991)
Keywords: (3GdGZJjGds; (3GdGMhGd GdSjGSjIs; (3GdGQgGHs; (3GdLQGFe GdSjGSjIs; (3GdGLJeGYs; (3GdLQGFe GdOhdjIs; (3GdJNQjH hGdJOejQs; (3ecGaMI GdLQjeIs; (3GdJeQOs