(3GdHOhQ GdSGaQI aj CehQ GdBNQI (B/s - (3GdLdGd GdSjhWj, YHO GdQMef Hf CHj HcQ Hf eMeO,s 849-911 (3gLQjs; (3YGThQ, eUWais ((3GdbGgQI (B:s (3ecJHI GdbQBf ddWHY hGdfTQ hGdJhRjY,s, 1990)
(3jTJed Ydi cTGaGJ(B.s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3jhe GdbjGeIs; (3GdKhGH hGdYbGHs; (3GdSeYjGJ (B((3Yde cdGe(B)s