John W. Hazard

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Miller, Richard E.; Hazard, John; Howes, Steven. 2001. Precision, accuracy, and efficiency of four tools for measuring soil bulk density or strength. Res. Pap. PNWRP-532. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 16 p. Monitoring soil compaction is time consuming. A desire for speed and lower costs,(More)
Geist, J. Michael; Hazard, John W.; Seidel, Kenneth W. 2008. Juvenile tree growth on some volcanic ash soils disturbed by prior forest harvest. Res. Pap. PNW-RP-573. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 22 p. The effects of mechanical disturbance from traditional ground-based logging and site(More)
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