(3JQGK GdYQH ai GdejcGfjcG (B/ s - (3LdGd Thbis ([S.N] : (3YGde GdcJH GdMOjK , s, 1973)
Keywords: (3GdYdhe YfO GdYQHs; (3GdejcGfjcGs; (3GdYdeGA YfO GdYQHs