Productive soils
Weir, Wilbert Walter, 1882-
Productive soils [by] Wilbert Walter Weir. Edited by R. W. Gregory. - Chicago, Philadelphia [etc.] J.B. Lippincott company [1946] - vii, 325 p. illus. (incl. diagrs.) col. pl., maps. 21 cm.
On cover: Revised. "Fifth edition."
agr46000318
Soils.
S591 / .W4 1946
Productive soils [by] Wilbert Walter Weir. Edited by R. W. Gregory. - Chicago, Philadelphia [etc.] J.B. Lippincott company [1946] - vii, 325 p. illus. (incl. diagrs.) col. pl., maps. 21 cm.
On cover: Revised. "Fifth edition."
agr46000318
Soils.
S591 / .W4 1946