(3eMehO GdeSYOj h cJGHg GdSO (B/ s - (3UehO, fhQ GdOjfs ((3JhfS (B:s (3GdOGQ GdJhfSjI ddfTQ,s, 1973)
Keywords: (3GdbUU GdYQHjIs; (3GdJGQjN GdCOHjs; (3GdfbO GdCOHjs; (3JhfSs