Grigal, D. F., & Ohmann, L. F. (1977). Biomass estimation for some shrubs from northeastern Minnesota. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station.
Chicago Style (17th ed.) CitationGrigal, D. F., and L. F. Ohmann. Biomass Estimation for Some Shrubs from Northeastern Minnesota. St. Paul, Minn.: Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1977.
MLA (9th ed.) CitationGrigal, D. F., and L. F. Ohmann. Biomass Estimation for Some Shrubs from Northeastern Minnesota. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1977.
Warning: These citations may not always be 100% accurate.