By Levin Oscar R.   in Journal of Forestry

ISSN:0022-1201|52|4|243-249

Society of American Foresters‎(1954)‎

Access to resources Favorite 13.151088

By Levin Oscar   Roberts Gerri M.   in The College Mathematics Journal

ISSN:1931-1346|44|4|300-306

Mathematical Association of America‎(2013)‎

Access to resources Favorite 10.685061