(3gj hYTGbgG (B:s (3hKdGK eSQMjGJ chejOjI (B/ (3JCdjas - (3OjQfeGJ,GfjSs; (3efUhQ,GfjSs ((3GdbGgQI,eUQ(B:s (3GdgjFI GdeUQjI GdYGeI,s, 1971)
Keywords: (3GdeSQMjGJ GdchejOjIs