(3GdhWf GdYQHj HYO GdMQH GdYGdejI GdKGfjI(B:s - (3aQL,GdjGSs ((3HjQhJ(B:s (3GdeDSSI GdYQHjI,s, 1981)
Keywords: (3GdYGde GdYQHj(B-(3JGQjNs