(3LHQGf Ndjd LHQGf (B: s (3MjGJg (B- (3ehJg (B- (3GOHg (B- (3afg (B/ s - (3fYjeI , ejNGFjd s ((3HjQhJ (B: s (3eDSSI fhad , s, 1985)
Keywords: (3GdTYQ GdYQHj s -- (3JGQjN s -- (3GdYUQ GdMOjK s