(3GdJWhQ GdKbGai ai GdhWf GdYQHi(B: s (3OQGSI JMdjdjI ebGQfI (B/ s - (3GdefXeI GdYQHjI ddJQHjI h GdKbGaI h GdYdhe (B.s (3GOGQI GdJhKjb h GdeYdheGJs ((3JhfS (B: s (3GdefXeI (B: s, 1980)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI h edGMbs
Keywords: (3GdhWf GdYQHis -- (3GdGMhGd GdKbGajIs