(3GdeLdI GdGLJeGYjI GdbhejI(B.s (3SHJeHQ (B1971 /s ((3GdbGgQI (B:s (3GdeQcR Gdbhej ddHMhK GdGLJeGYjI hGdLfGFjI,s, 1971)
(3YOO NGU Yf GdJejjR GdYfUQj(B.s
(3GdeLdO GdKGef(B: (3GdYOO GdKGdK(B.s
Keywords: (3bhGfjf hJTQjYGJs -- (3OhQjGJs