(3LQGFe GdOe (B: s (3GdLQGFe GdhGbYjI Ydi GdGTNGU aj bGfhf GdYbhHGJ Qbe (B11 (3dSfI (B1969 / s - (3GdLejdj , YHO GdSJGQ s ((3HZOGO(B: s (3LGeYI HZOGO , s, 1973)
Keywords: (3GdbGfhf GdLfGFj s