Biodiversity Heritage Library
By "Weir, Wilbert Wilter, 1882-"
Productive soils; the fundamentals of successful soil management and profitable crop production, by Wilbert Walter Weir ... 235 illustrations in the text.
By: Weir, Wilbert Wilter,
Publication info: London,J.B. Lippincott company[c1920]
Contributed by: University of California Libraries (archive.org)