Books by Phillip S. Derr:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Derr, Phillip S.: Soil survey of Otero area, New Mexico : parts of Otero, Eddy, and Chaves Counties. (U.S. Dept. of Agriculture, Soil Conservation Service, 1981), also by New Mexico State University. Agricultural Experiment Station, United States Forest Service, and United States. Soil Conservation Service (page images at HathiTrust)
Find more by Phillip S. Derr at your library, or elsewhere.