(3GdTQWI aj Ohd eLdS GdJYGhf GdNdjLj (B/s - (3YHO GdYRjR, eMeO GdMSjfjs ((3GdQjGV (B:s (3GdeQcR GdYQHj ddOQGSGJ GdCefjI hGdJOQjH,s, 1990)
(3HHdjhLQGajI (B: (3U(B. 321-323.s
Keywords: (3GdTQWIs -- (3Ohd GdNdjL GdYQHjIs; (3GdCef GdOGNdjs -- (3Ohd GdNdjL GdYQHjIs