TY  - BOOK
AU  - Ohmann,Lewis F.
AU  - Grigal,David F.
AU  - Rogers,Lynn L.
TI  - Estimating plant biomass for undergrowth species of northeastern Minnesota
U1  - 333.9539 
PY  - 1981///
CY  - Washington
PB  - United States Government Printing Office
KW  - Biomass energy
KW  - Gas producers
ER  -