Biodiversity Heritage Library
By "Walker, Percy Hargraves, 1867-"
Some technical methods of testing miscellaneous supplies, including paints and paint materials, inks, lubricating oils, soaps, etc. By Percy H. Walker...
By: Walker, Percy Hargraves,
Publication info: Washington,Govt. print. off.,1910.
Contributed by: University of California Libraries (archive.org)