Beschreibung:

Gr.-8°. Mit zahlr. Abbildungen. VI, 740 SS. OLn. (etw. angestaubt und fleckig).

Bemerkung:

"70th Congress, 2d Session. House of Representatives Doc. No. 573 ".- Contents: "Message from the president od the United States ... Calvin Coolidge. Concentration of heavy precipitation as a cause of floods. Wter holding capacity of forest soils. Forests as a factor in flood control within the upper Mississippi River Basin. Forest conditions within the Ohio River Basin. Forest conditions within the lower Mississippi River Basin. Watershed conditions within the Missouri River Basin. Forest conditions within the Arkansas-White River Basin. Forest conditions within the Red-Ouachita River Basin" etc.