00796nam a2200265 4500 754937 20150316104206.0 000 67015835 UOEL DLC DLC S591 .D65 1970 631.4 Donahue, Roy Luther, 1908- Our soils and their management; increasing production through soil and water conservation, by Roy L. Donahue. [3d ed.] Danville, Ill., Interstate [1970] 683 p. illus. 24 cm. Includes bibliographies. Soil science. Agriculture (General) Soil management. Crops and soils. Water conservation. 7 cbc orignew u ncip 19 y-gencatlg lcc LL 2909 2909 0 0 lcc 0 0 UOE UOE GEN 2015-03-16 0 S591 .D65 1970 20026333 2026-04-27 12:00:46 20026333 2015-03-16 LL