(3QSGdI GdZaQGf (B/ s - (3GHh GdYdGA GdeYQj, GMeO Hf YHO Gddg Hf SdjeGf, s 363-449 (3gLQj, s; (3fUQ Gddg, eMeO YRJ, s ((3HjQhJ (B[(3dHfGf(B] : s (3OGQ GMjGA GdJQGK GdYQHj, (B[(3Hjf (B1949 (3h(B1959].s, 1959)
Keywords: (3GdGOH GdYQHjs -- (3GdYUQ GdYHGSj GdKGdK, (B946-1258.s