ISBN 0961307420 books & textbook
Exploration Geochemistry: Design and Interpretation of Soil Surveys : In Cooperation With the Association of Exploration Geochemists (Reviews in Econ)
Fletcher, William K. Mehrtens, M. B. Hoffman, S. J. Sinclair, A. J.
Society of Economic Geologists /1994-12-01 Paperback / 180 Pages
isbn-10: 0961307420 / isbn-13: 9780961307424