Weeds of the North Central States / by the Editorial Subcommittee of the Regional Technical Committee of Project NC-10, consisting of K. P. Buchholtz [et al.] ; 1960 revision by F. W. Slife, K. P. Buchholtz, and Thor Kommedahl.
Imprint
Urbana, Ill. : University of Illinois Agricultural Experiment Station, 1960, 1976 printing.