(3eTQhYGJ GdeYhfI GdZPGFjI (B/ s - FAO (3efXeI GdGZPjI hGdRQGYI s (: (3GjWGdjG s (3eXeI GdGZPjI hGdRQGYI (B, s, 1987)
Keywords: bulletin FAO