(3GdbGfhf GdbVGFj GdNGU (B: s (3GdLRA GdKGfi, s (3GdNUheI GdbVGFjI CeGe eMGce GdOQLI GdChdi (B: (3GdMce GdbVGFj (B/ s - (3SYO, EHQGgje fLjH s ((3GdbGgQI (B: s (3efTCI GdeYGQa,s, 1980)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B. s
Keywords: (3bGfhf GdeQGaYGJ s -- (3eUQ s -- (3OhGFQ eYGQa s; (3fbV GdCMcGe s -- (3eUQ s -- (3OhGFQ eYGQa s