00579naa a2200157 a 450000100080000000500110000800800410001910000180006024500930007826000090017170000150018070000210019570000170021670000170023377301710025012994501998-12-01       1997    bl uuuu     u00u1 u    #d1 aCOTRIM, A. R.  aIdentifyng the origin and monitoring structural changes of lignins by means of FTIR-PCA.  c19971 aFERRAZ, A.1 aGONCALVES, A. R.1 aSILVA, F. T.1 aBRUNS, R. E.  tIn: BRAZILIAN SYMPOSIUM ON THE CHEMISTRY OF LIGNINS AND OTHER WOOD COMPONENTS, 5., Curitiba. Proceedings... Curitiba: Universidade Federal do Parana, 1997. p.186-192.