(3KdGKjI ChQjSJ(B: (3CLGeefhf(B, (3MGedGJ GdbQGHjf(B, (3GdUGaMGJ (B/ s - (3dhjS YhVs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1987)
Keywords: (3GdGOH GdjhfGfis; (3GdeSQM GdjhfGfis; (3GdeSQMjGJ GdjhfGfjIs