Soil conservation [by] Helmut Kohnke [and] Anson R. BertrandHelmut Kohnke · First published 1959Open the Tome
Testing the Fertility of Alberta Soils by the Neubauer and Lemmermann MethodsHelmut 1901-1991 Kohnke · First published 2021Open the Tome
Soil Science Simplified, Fifth EditionDonald P. Franzmeier, William W. McFee, John G. Graveel, Helmut Kohnke · First published 2016Open the Tome
A survey and discussion of lysimeters and a bibliography on their construction and performanceHelmut Kohnke · First published 1940Open the Tome
![Placeholder cover for Soil conservation [by] Helmut Kohnke [and] Anson R. Bertrand](/images/parchment.webp)
