"(3Yde faS Gdfeh (B""(3GdWahdI h GdeQGgbI(B""" / s - (3MGeO YHOGdSdGe RgQGfs ([S.N] : (3YGde GdcJH GdMOjK , s, 1990)
Keywords: (3GdGWaGds; (3Yde GdfaSs; (3fXQjGJs; (3GdeQGgbIs; (3Yde faS Gdfehs; (3efGgLs; (3eQGMd feh GdGfSGfs; (3eQGMds; (3Gdfehs