by Michelle M. Lorah ... [and others] ; in cooperation with the U.S. Army Garrison, Aberdeen Proving Ground, Environmental Conservation and Restoration Division, Aberdeen Proving Ground, Maryland
by Joanna N. Thamke ... [and others] ; in cooperation with the U.S. Department of Agriculture-Forest Service and Montana Department of Environmental Quality
by G.N. Delin ... [and others] ; prepared in cooperation with the University of Minnesota Department of Soil Science, the U.S. Department of Agriculture, Agricultural Research Service, and the Minnesota Pollution Control Agency