(3CVhGA Ydi CMcGe GdLRGA aj bGfhf GdYbhO GdShOGfj dSfI (B1974 /s - (3chdjShf, BdGf O(B.s; (3ScdG, gfQj QjGVs ((3HjQhJ (B:s (3OGQ GdLjd,s, 1982)
Keywords: (3GdYbhO (B((3bGfhf eOfj(B)s -- (3GdShOGfs