(3gDdGA ge QLGd jhdjh (B: s (3eY GVhGA Ydi ePcQGJ jhSa UOjb hYHOGdefYe YHOGdQAha (B/ s - (3deYi GdeWjYis ((3GdbGgQI (B: s (3ecJHI eOHhdi , s, 1989)
Keywords: (3KhQI (B23 (3jhdjh (B1952s; (3eUQ (B- (3JGQjN (B- (3GdYUQ GdMOjK (B- (3KhQI (B23 (3jhdjh (B1952s; (3QLGd KhQI (B23 (3jhdjhs