TY  - BK
AU  - Voorhees,W.B.
TI  - Yield effects of compaction:  are they significant?
SN  - 0149-9890
U1  - 92-078732 
PY  - 1990///
KW  - Soil chemistry and physics
KW  - Yields
KW  - AGROVOC
N1  - references. Paper presented at the 1990 International Summer Meeting of the American Society of Agricultural Engineers, June 24-27, 1990, Columbus, Ohio
ER  -