. (3ecGaMI GdLQjeI(B]: (3GYeGd GdMdbI GdGhdi decGaMI GdLQjeI(B]s (3GdbGgQI (B2-5 (3jfGjQ (B1961s - . (3eUQ(B. (3GdeQcR Gdbhej ddHMhK GdGLJeGYjI hGdLfGFjIs ((3GdbGgQIs, 1961)
Keywords: (3Yde GdfaS GdLfGFjs