Seven chemicals fail to protect ponderosa pine from Armillaria root disease in central Washington /
Gregory M. Filip and Lewis F. Roth.

APA Citation

Filip, G. M., Roth, L. F., Pacific Northwest Research Station (Portland, O. (1987). Seven chemicals fail to protect ponderosa pine from Armillaria root disease in central Washington. [Portland, Or.]: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station.

MLA Citation

Filip, Gregory M, Lewis F Roth, and Or.) Pacific Northwest Research Station (Portland. Seven Chemicals Fail to Protect Ponderosa Pine From Armillaria Root Disease In Central Washington. [Portland, Or.]: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1987.