(3JhJ YfN Gehf(B(45 (3ObjbI (B) / s - (3aWjf YHOGdhgGHs; (3MSf GdJdeSGfi (B((3eUhQ(B)s ([S.N] : (3GdeQcR Gdbhei ddSjfeG , s, 1963)
Keywords: (3TQGFW ajOjhs; (3GadGe JSLjdjIs