(3eUQ GdeLGgOI ai GdYUQ GdMOjKs (3ef Chd Mce ESeGYjd Edi HOGjI GdKhQI GdYQGHjIs - (3GdQGaYi, YHO GdQMefs ((3GdbGgQIs (3OGQ GdgdGds, 1989)
(3GdeMJhjGJ (B: (3YgO GdNOjh ESeGYjd(B--(3bfGI GdShjS(B--(3GdMQcI GdhWfjI h GdMjGI GdfjGHjI(B...................(3EdNs
7
Keywords: (3GdJGQjN GdMOjKs -- (3eUQs; (3eUQs -- (3JGQjNs -- (3GdYUQ GdMOjKs -- (3YUQ ESeGYjds