Wilbert Walter Weir.
PRODUCTIVE SOILS (Lippincott's farm manuals), 2d rev. ed.
PRODUCTIVE SOILS, by Wilbert Walter Weir. 2d rev. ed. (Lippincott's farm manuals) © 4Jan23, A698522. R69620, 6Nov50, Wilbert Walter Weir (A)
Wilbert Walter Weir|A