253820document88561Analysis of anthropogenic nitrogen and its influencing factors in Beijing.pdfapplication/pdfa473ab10f3cb720b3fdcfed725cce737MD55239482019-10-21 08:42:16https://pure.iiasa.ac.at/id/eprint/16116/1/Analysis%20of%20anthropogenic%20nitrogen%20and%20its%20influencing%20factors%20in%20Beijing.pdf