(3HMK Yf GdJQGK GdYQHi fXQI fbOjI efgLjI (B/ s - (3QaYJ SdGes ([S.N] : (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1990)
Keywords: (3GdGOH GdYQHis; (3GdMVGQI GdYQHjI GdGSdGejI (B- (3GdeYGQa GdHMQjIs; (3GdJQGKs; (3GddZI GdYQHjIs; (3GdKbGaIs; (3GdHMhKs; (3GdYdGbGJ GdKbGajIs; (3GdefgLjIs; (3GdMVGQI GdZQHjIs; (3GdGfKQHhdhLjG GdKbGajIs