(3JNQjL GdCMGOjK hGdBKGQ GdhGbYI aj efgGL GdHjVGhj (B/s - (3Hf GdMSjf GdYQGbj, YHO GdQMje s 725-806 (3g`(B.s; (3GdYLej, eMeO Hf fGUQs; (3GdHjVGhj, YHO Gddg Hf YeQ Hf eMeO,s (3J(B. 685 (3g`(B.s ((3HjQhJ (B:s (3OGQ GdHTGFQ GdESdGejI,s, 1989)
Keywords: (3GdMOjKs -- (3eSJNQLGJs