Biodiversity Heritage Library
By "Van Blokland, P. J. "
Economic effects of controls on nitrogen fertilizer / E.R. Swanson, C.R. Taylor, and P.J. Van Blokland.
By: Swanson, E. R. (Earl Raymond), - Taylor, C. R. - Van Blokland, P. J.
Publication info: Urbana :Agricultural Experiment Station, College of Agriculture, University of Illinois at Urbana-Champaign,1978.
Contributed by: University Library, University of Illinois Urbana Champaign