(3GdJcde Ydi eSJhi GdeSDhdjGJ (B/ s - (3CdcSGfOQ, d (B. (3Os; (3KhQH, C (B. (3Ojds; (3fGTO, eNJGQs; (3YhjS, fYjes ((3adhQjOG (B:s (3GdTQcI GdCeQjcjI ddJOQjH Gdegfj (B- (3GdOGFQI GdOhdjI,s, 1989)
Keywords: (3GddZI GdEfLdjRjIs; (3JOQjS GddZI GdKGfjIs