(3HYO GdYGUaI GdJZjQGJ ai GdJhGRf GdYScQi HGdTQb GdGhSW (B/ s - (3eMeO YHOGdMdje GHhZRGdI(B((3eJQLe(B)s; (3chQOSeGf(B, (3GfJhfi g`(B.s ([S.N] : (3OGQ GdgdGd ddWHGYI hGdfTQs)
Keywords: (3GdYQGbs; (3GdGSdMIs; (3MQH GdNdjLs; (3GdbhGJ GdeSdMIs; (3GdchjJ (B- (3JGQjN (B- (3GfJgGA GdGMJdGd GdYQGbi (B(1991)s