. (3GZGfj hJeKjdjGJ ddUZGQs - . (3ZQjH, QhRs; (3fNh, MfG; JfbjW hGUWMGHs ((3HjQhJs (3ecJHI GdeOQSjI hOGQ GdcJGH GddHfGfjs, 1964)
Keywords: (3GZGfj GdGWaGds