00441naa a2200145 a 450000100080000000500110000800800410001910000150006024500610007526000090013670000170014570000150016270000170017777301010019410302292007-04-09 1998 bl --- 0-- u #d1 aMACEDO, A. aX-ray microtomography for studying soil surface sealing. c19981 aCRESTANA, S.1 aVAZ, C. M.1 aSILVA, F. O. tIn: 1998 ANNUAL MEETING, 1998, Baltimore. Abstracts... Baltimore: ASA: CSSA: SSSA, 1998. p. 181.