00569nam a2200145 a 450000100080000000500110000800800410001910000210006024501040008126001670018530000150035265300140036770000250038170000170040619403782013-06-11       2012    bl uuuu     u00u1 u    #d1 aINACIO, C. de T.  aFrom fertilizer to foodbtracing N dynamics in conventional and organic cropping systems using 15N.  aIn: INTERNATIONAL SYMPOSIUM ON MANAGING SOILS FOR FOOD SECURITY AND CLIMATE CHANGE ADAPTATIION AND MITIGATION, 2012, Viena, Austria. Synopses... Viena: IAEAc2012  ap. 415-416  aGaseous N1 aMAGALHÃES, A. M. T.1 aCHALK, P. M.