(3GdYOhGf GdUdjHi Ydi eUQ (B: (3gRjeI dhjS GdJGSY ai GdefUhQI haGQSchQ (B/ s - (3LhRja fSje jhSas ((3HjQhJ (B: s (3OGQ GdfgVI GdYQHjI ddWHGYI hGdfTQ , s, 1981)
Keywords: (3GdMQhH GdUdjHjI ai eUQs; (3eUQ (B- (3JGQjNs; (3dhjS GdJGSYs; (3eUQ (B- (3JGQjN GSdGeis