(3COH GdQMdI HGdeZQH aj GdYUQ GdeQjfj (B/s - (3TGgOj, GdMSfs ((3GdQHGW(B:s (3OGQ Gdbde,s, 1990)
(3aj (B: (3COH GdQMdI HGdeZQH aj GdYUQ GdeQjfj(B. -(3W(B. 1. -[(3O(B. (3e(B. : (3YcGX, (B19--]. -(3eL(B. 1.s
Keywords: (3GdQMdGJ aj GdCOH GdYQHjs; (3COH GdQMdGJs -- (3GdeZQHs -- (3JGQjN hfbOs -- (3GdeQjfjhf, (B1269-1465s