(3GdQhM (B: s (3aj GdcdGe Ydi GQhGM GdGehGJ h GdGMjGA HGdOdGFd ef GdcJGH h GdSfI (B/ s - (3EHf bje GdLhRjI, TeS GdOjfs ((3YeGf (B:s (3OGQ GdLjd ddfTQ h GdJhRjY,s, 1988)
Keywords: (3GdQhMs