The 3-F erosion bridge
Subtitle: a new tool for measuring soil erosion
By: Gerald E. Ranger and Franklin F. Frank
Contributors: Frank, Franklin F; California. Dept. of Forestry; United States. Forest Service
Series: Range improvement studies -- no. 23
Publisher: California, Resources Agency, Dept. of Forestry; U.S. Dept. of Agriculture, Forest Service
Published: 1978
Place of publication: Sacramento, CA; [Washington, D.C.?
Language: eng
Subjects: Soil erosion -- Measurement
Other titles: The three-F erosion bridge
Notes: Caption title

"September 1978."