(3GdcjejGA GddGYVhjI GdMOjKI(B/s - (3LGeHQRs; (3hSGe GHQGgje YRjRs; (3GOQjS YHOGdbGOQ NWGHs ((3GdehUd(B[(3GdYQGb(B]:s (3OGQ GdcJH ddWHGYI hGdfTQ,s, 1980)
Keywords: (3GdcjejGA ZjQ GdYVhjIs; (3GdadRGJs; (3GdbdhjGJs