(3GSGSjGJ Yde hXGFa GdGYVGA (B/ s - (3YHOGdeLjO GdTGYQs; (3gTGe cfYGfs; (3gTGe GdNWjHs; (3YeGO GdNWjHs ([S.N] : (3OGQ GdeSJbHd , s, 1993)
Keywords: (3GdWHs; (3LSe GdGfSGfs; (3GdaSjhdhLjGs; (3GdJTQjMs