(3GdJQcjH YfO GHf GdebaY aj ebOeGJ cJGH cdjdI h OefI (B:s (3OQGSI EMUGFjI hUajI (B/s - (3YGThQ , GdefUa s ((3GdLRGFQ (B:s (3OjhGf GdeWHhYGJ GdLGeYjI ,s, 1982)
Keywords: (3GHf GdebaY s; (3cJGH s; (3GdJQcjH s; (3cdjdI s