Our soils and their management increasing production through environmental soil and water conservation

Manylion Llyfryddiaeth
Prif Awduron:	Donahue, Roy Luther 1908- (Awdur), Follett, Roy H. (Awdur), Tulloch, Rodney W. (Awdur)
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Danville, Ill. Interstate [1983]
Rhifyn:	5th edition.
Pynciau:	Soil science. Soil management. Crops and soils. Water conservation.