(3EYQGH KdGKjf ShQI ef GdbQBf GdcQje (B/ s - (3EHf NGdhjI, CHh YHO Gddg GdMSjf Hf CMeOs; (3Sdje, eMeO EHQGgjes ((3GdbGgQI (B: s (3ecJHI GdbQBf,s, 1989)
Keywords: (3GdEYQGH(B.s; (3fMh GdbQBf(B.s