(3GdQbGHI h eQGLYI GdMSGHGJ (B/ s - (3GdUMf, YHO GdaJGMs; (3fhQ, CMeOs; (3CHh GdMSf, Ydjs ((3GdEScfOQjg (B:s (3eDSSI THGH GdLGeYI,s, 1989)
Keywords: (3GdeMGSHIs; (3JObjb GdMSGHGJs