Tests of large timber columns and presentation of the Forest Products Laboratory column formula /
by J.A. Newlin and J.M. Gahagan.
- Washington : U.S. Dept of Agriculture, 1930.
- 44 p., 4 p. of plates : ill. ; 23 cm.
- Technical bulletin / United States Department of Agriculture ; no. 167 .
- Technical bulletin (United States. Department of Agriculture) ; no. 167. .