Miller, Richard E. Precision, Accuracy, and Efficiency of Four Tools for Measuring Soil Bulk Density or Strength / Richard E. Miller, John W. Hazard, Steven Howes. -- Portland : USDA Forest Service, 2001. -- 16 s. : obr., tab. ; 28 cm. -- (Research Paper ; PNW-RP-532). -- (brož.) : .00

I. Hazard, John W.
II. Howes, Steven

621.317.7+630*114+624.138
ZV001