Soil Science. v.50, 1940
Bear, Firman E., ed.
Soil Science. v.50, 1940 edited by Firman E. Bear - Baltinore Willians and Wilkins 1940 - v.50, iv, 496 p.; 25cm.
0038075X
Soil Science. v.50, 1940 edited by Firman E. Bear - Baltinore Willians and Wilkins 1940 - v.50, iv, 496 p.; 25cm.
0038075X
