(3HOGFY GdSdc aj WHGFY Gdedc (B/ s - (3GHf GdGRQb, eMeO Hf Ydj Hf eMeO, s (3Jhaj (B896 (3gLQj, s; (3GdfTGQ, Ydj SGej, s 1917-1980(3, s ((3HZOGO, GdYQGb (B: s (3efThQGJ hRGQI GdKbGaI hGdafhf (B977-1978.s, 1977)
(3jJVef EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdGSdGe hGdOhdI(B.s; (3GdGSdGe hGdSjGSI(B.s