Books by Robert Alvord Campbell:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Campbell, Robert Alvord, 1910-: Forest service log grades for southern pine (U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1964) (page images at HathiTrust)- Campbell, Robert Alvord, 1910-: The major defects in southern hardwood veneer logs and bolts (U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1966), also by Ellwood S. Harrar (page images at HathiTrust)
- Campbell, Robert Alvord, 1910-: Southern pine log grades for yard and structural lumber (U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1968), also by James G. Schroeder and Richard C. Rodenbach (page images at HathiTrust)
- Campbell, Robert Alvord, 1910-: Southern pine tree grades for yard and structural lumber (U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1968), also by James G. Schroeder and Richard C. Rodenbach (page images at HathiTrust)
Find more by Robert Alvord Campbell at your library, or elsewhere.