00675cam a22002177a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001500102110000800117245010200125260002800227300001900255500005900274650004000333650003200373710005200405CHAP20220817042545.0971013s1966 r 00010 d a48054 a49026 a53174 cCHAP a631.43bF3 aFAO14aThe use of isotopes in soil organic matter studiesb: report of the FAOc/ EAEA Technical Meeting aOxford, Pergamon,c1966 a505 p.b: ius. aSupl. to the Journal of Applied Radiation and Isotopes14aEnergía atómica en agricultura.14aSuelosxMateria orgánica.0 aOrganismo Internacional de Energía Atómica.