(3JOQjS GdYdhe (B/ s - (3cGXe,CMeO NjQj,s; (3Rcj,SYO jSi,s ([(3GdbGgQI,eUQ(B] : s (3OGQ GdfgVI GdYQHjI,s, 1973)
(3jJVef GQLGYGJ HHdjhLQGajI HGddZI GdYQHjI hGdGLfHjI(B.s
Keywords: (3GdYdhe(B-s -- (3WQb GdJOQjSs