TY - BOOK ID - 134185348 TI - Forest health monitoring in Pennsylvania, 1998-1999 PY - 2002 PB - Newton Square, PA U.S. Dept. of Agriculture, Forest Service, Northeastern Research Station DB - UniCat KW - Forest health KW - Forests and forestry KW - Pennsylvania UR - https://www.unicat.be/uniCat?func=search&query=sysid:134185348 AB - ER -