(3GdGJUGd hGdSdhc GdGfSGfi (B/ s - (3QhHf, HQfJs; (3fNHI ef GYVGA bSe hSGFds ([S.N] : (3eYgO GdGOGQI GdYGeI , s, 1991)
Keywords: (3GddZGJs; (3Yde GdfaSs; (3GdYdGbGJ GdGfSGfjIs; (3GdSdhcs; (3GdeYdheGJs; (3GdGJUGds; (3hSGFd GdGYdGes; (3GOGH GdSdhcs