Schwartz, R C Phosphorus extractability of soils amended with stockpiled and composted cattle manure. [electronic resource] - Journal of environmental quality - 970-8 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0047-2425 Standard No.: 10.2134/jeq2004.0317 doi Subjects--Topical Terms: AnimalsCattleFertilizersManurePhosphorus--isolation & purificationRefuse Disposal--methodsSoil