(3GdbGfhf GdJCOjHj ddehXa GdYGe hQbGHJg GdbVGFjI (B: s (3OQGSI JMdjdjI ebGQfI (B/ s - (3eMSf MSfjf MeRI s ((3GdbGgQI (B: s (3OGQ GdacQ GdYQHj, s, 1960)
(3HHdjhLQGajG(B: (3UaMGJ (B143s
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3JGOjH GdYGedjf HGdbWGY GdYGe(B.s