A Preliminary Study Of The Effect Of Cultivation On Certain Chemical And Physical Properties Of Some South Dakota Soils
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A Preliminary Study of the Effect of Cultivation on Certain Chemical and Physical Properties of Some South Dakota Soils
| Author | : George Carroll Wallis |
| Publisher | : |
| Total Pages | : 760 |
| Release | : 1937 |
| Genre | : Agricultural prices |
| ISBN | : |
Report on the Work and Expenditures of the Agricultural Experiment Stations
| Author | : United States. Agricultural Research Service |
| Publisher | : |
| Total Pages | : 694 |
| Release | : 1931 |
| Genre | : Agricultural experiment stations |
| ISBN | : |
Publications on Planning for Soil, Water, and Wildlife Conservation, Flood Control, and Land Utilization
| Author | : United States. Soil Conservation Service |
| Publisher | : |
| Total Pages | : 140 |
| Release | : 1939 |
| Genre | : Conservation of natural resources |
| ISBN | : |
Annual Report of the Director of the South Dakota Agricultural Experiment Station
| Author | : South Dakota Agricultural Experiment Station |
| Publisher | : |
| Total Pages | : 718 |
| Release | : 1925 |
| Genre | : Agriculture |
| ISBN | : |
Soil Conservation Literature
| Author | : United States. Soil Conservation Service. Library |
| Publisher | : |
| Total Pages | : 392 |
| Release | : 1937 |
| Genre | : |
| ISBN | : |
A Review of the Parasitic Wasps of the Ichneumonid Genus Exenterus Hartig
| Author | : Robert Asa Cushman |
| Publisher | : |
| Total Pages | : 712 |
| Release | : 1940 |
| Genre | : Exenterus |
| ISBN | : |
This review of parasitic wasps is motivated by the discovery within the past several years that three European species of pine-feeding sawflies have become established in North America, which prompted interest in the parasites of the sawflies in this group.
