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Global inputs of biological nitrogen fixation in agricultural systems

D. F. HerridgeNew South Wales Department of Primary Industries, 4 Marsden Park Rd, Calala, NSW, 2340, AustraliaMark B. PeoplesCSIRO Plant Industry, P.O. Box 1600, Canberra, ACT, 2601, AustraliaRobert M. BoddeyEmbrapa-Agrobiologia, Km 7—Rodovia BR 465, Seropédica, 23890-000, Rio de Janeiro, Brazil
2008en
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