Wang, Shan-Qin [In-site total N content prediction of soil with Vis/NIR spectroscopy]. [electronic resource] - Guang pu xue yu guang pu fen xi = Guang pu Apr 2008 - 808-12 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1000-0593 Subjects--Topical Terms: Nitrogen--analysisSoil--analysisSpectrophotometry--methodsSpectroscopy, Near-Infrared--methods