(3GdCQGLhR (B: s (3eSQM NjGd GdXd GdJQcj (B/ (3JCdja s - (3BfO,eJjfs; (3SdGe,efi MGeOs; (3GdQHGW,Gejf MSjfs ((3JQcjG(B:s (3GcGOjejI Gdafhf ddfTQ,s, 1979)
(3eJQLe ef GdGfcdjRj Gdi GdYQHjs
Keywords: (3eSQM GdYQGFSs