(3OQhS aj bGfhf GdYed GddHfGfj (B/ s (3gTGe UGOb Ydj UGOb(B. s - (3UGOb, gTGe UGOb Ydj s ((3HjQhJ (B: s (3GdOGQ GdLGeYjI,s, 1982)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B. s
Keywords: (3GdYed hGdYeGds -- (3bhGfjf hJTQjYGJs -- (3dHfGfs