Villas Boas, Roberto books & textbook
Environmental Geochemistry in the Tropics (Lecture Notes in Earth Sciences, 72)
Silva-Filho, Emmanoel V. Villas-Boas, Roberto Wasserman, Julio Cesar
Springer /1998-05-20 Paperback / 324 Pages
isbn-10: 3540637303 / isbn-13: 9783540637301
Indicators of Sustainability for the Mineral Extraction Industry
Christian Beinhoff Roberto C. Villas Boas
Carajas, Oriental Amazon, Brazil /2002-01-01 Paperback
isbn-10: 8572271643 / isbn-13: 9788572271646
Canteras esculas en iberoamerica.
Conselho Nacional de Desenvolvimiento Científico e Tecnológico /2001T Paperback
isbn-10: 8572271422 / isbn-13: 9788572271424
