URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
http://dx.doi.org/10.1016/j.soilbio.2004.05.004DOI Link
http://www.sciencedirect.com/science/article/pii/S[...]04/04/2013Item is within a limited-access website
http://pdn.sciencedirect.com/science?_ob=MiamiImag[...]04/04/2013PDF ReaderItem is within a limited-access website