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Food and feed trade as a driver in the global nitrogen cycle: 50-year trends http://t.co/vK3UG9Tujj
Food and feed trade as a driver in the global nitrogen cycle: 50-year trends http://t.co/vK3UG9Tujj
Important paper: #Nitrogen traded each year increased 8-fold from 1961-2010; largest segment devoted to animal feed. http://t.co/jtA9ZNQTcg