(3Gdi GdOjGQ GdeefhYI(B: (3ZQGFH GdSaQ hWQGFaI (B/ s - (3jhSa YRGdOjfs ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1989)
Keywords: (3GdbUUs; (3GdQMdGJs; (3GdYGdes; (3GOGH GdSaQs; (3hUa hQMdGJs