Forest health and protection / Edmonds, Robert L. Agee, James K. Gara, Robert I. Forest health. Forest protection. Forest ecology. 634 HIL 2000 A091 Or. Boston : McGraw-Hill, c2000. c2000. Text xvii, 630 p. : http://www.loc.gov/catdir/description/mh023/99040276.html http://www.loc.gov/catdir/toc/mh023/99040276.html