(3eNJGQGJ ef EHf Sgd (B[(3OjhGf EHf Sgd GdETHjdj(B]s - (3EHf Sgd, EHQGgje Hf Sgd GdETHjdj, CHh ESMGb (B(605-649(3g`(B)s ((3HjQhJ (B((3dHfGf(B): s (3ecJHI UGOQ, s, 1953)
Keywords: (3GdTYQ GdYQHj(B.s; (3GdYUQ GdCfOdSj(B.s