169250document61576A high-resolution assessment on global nitrogen flows in cropland.pdfapplication/pdfc514f4f2ad4306c30004a4d02fde3218MD510294202016-06-09 14:44:25https://pure.iiasa.ac.at/id/eprint/9236/1/A%20high-resolution%20assessment%20on%20global%20nitrogen%20flows%20in%20cropland.pdf