Undersander et al., 1990. In: Alternative Field Crop Manual, University of Wisconsin, Cooperative Extension
Document reference
Undersander, D. J. ; Ehlke, N. J. ; Kaminski, A. R. ; Doll, J. D. ; Kelling, K. A., 1990. Hairy vetch. In: Alternative Field Crop Manual, University of Wisconsin, Cooperative Extension