Kn५del, Klaus Environmental Geology [electronic resource] Handbook of Field Methods and Case Studies by Klaus Kn५del, Gerhard Lange and Hans-Jॱrgen Voigt - Berlin Springer 2007 http://dx.doi.org/10.1007/978-3-540-74671-3 ISBN: 9783540746713 Dewey Class. No.: 551.30722 / (e-book)