: (3GdOjfs /(3HMhK eegOI dOQGSI JGQjN GdCOjGf s - (3eMeO YHOGddg OQGRs (: (3GdchjJ s (3,GdeWHYI GdYGdejIs, 1952)
(3jTJed Ydi HHjdhLQGajG (B167(3,(B168.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdOjGfGJs -- (3JGQjNs