Soil survey (reconaissance) :
the Red River Valley area, Minnesota /
by C.C. Nikiforoff ... [et al.].

APA Citation

Nikiforoff, C. C. (Constantin Constantinovich)., University of Minnesota. Agricultural Experiment Station., United States. Bureau of Chemistry and Soils. (1939). Soil survey (reconaissance): the Red River Valley area, Minnesota. [Washington, D.C.: G.P.O..

MLA Citation

Nikiforoff, C. C. (Constantin Constantinovich), 1886-, University of Minnesota. Agricultural Experiment Station, and United States. Bureau of Chemistry and Soils. Soil Survey (reconaissance): the Red River Valley Area, Minnesota. [Washington, D.C.: G.P.O., 1939.