"usfs-gtr-wo-87" . "Future of America’s forest and rangelands: 2010 Resources Planning Act Assessment. General Technical Report WO-87"^^ . "2012"^^ . "http://www.fs.fed.us/research/publications/gtr/gtr_wo87.pdf"^^ . "report" . . . . . . . . . . . . . . . . . . . . . . . _:genid1 . _:genid1 . _:genid1 . _:genid1 . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid3 . _:genid3 . _:genid3 . _:genid3 .