Preservative treatment of poles
Kempfer, W.H.
Preservative treatment of poles - Washington 1911 - 1-55 p. - Treatment, Poles United States Department of Agriculture. Forest Service Bulletin No. 84 .
Preservative treatment of poles - Washington 1911 - 1-55 p. - Treatment, Poles United States Department of Agriculture. Forest Service Bulletin No. 84 .