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	1.	... Erosion and related land use conditions in Winona county, Minnesota, by Mark H. Brown and Iver J. Nygard ... by Brown, Mark Herbert, 1900- Nygard, Iver J. (Iver John), 1903- Series: U. S. Soil Conservation Service. Erosion survey ; no. 17 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington [U.S. Govt. Print. Off., 1941] Availability: No items available. Add to cart (remove)
	2.	Exploratory study of the principal soil groups of Alaska, by Charles E. Kellogg and Iver J. Nygard. by Kellogg, Charles E. (Charles Edwin), 1902- Nygard, Iver J. (Iver John), 1903- Series: United States. Agriculture monograph ; no. 7. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington [U.S. Govt. Print. Off.] 1951 Availability: No items available. Add to cart (remove)

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