(3QSGdI OcJhQGQg ai eYGjfI eSQM GdLQjeI (B:s (3OQGSI ebGQfg JTed GdLGfH GdbGfhfi h GdTQWi (B/s - (3eMeO eMeO eMeO YfHs ({(3ecGf GdfTQ ZjQ eMOO (B}s {(3GdfGTQ ZjQ eMOO(B}s, 1988)
621-632(3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdbGfhf GdLfGFis