(3OQGSI aj Yde GdGLQGe hGdYbGH (B/s - (3GHh YGeQ ,eMeO Rcj s (((3O(B.(3e(B) :s (3GdOGQ GdLGeYjI ddWHGYI hGdfTQ ;s, 1982)
Keywords: (3Yde GdGLQGe hGdYbGH s