@book{ 0-1605281379, title = {Essentials of geology}, author = {Wicander, Reed and Monroe, James S.}, address = {Belmont, Calif. u.a.}, publisher = {Wadsworth Pub. Co}, year = {1999}, edition = {2nd ed}, isbn = {0534547745}, isbn = {0534532853}, language = {English}, note = {Includes bibliographical references and index. - Previous ed.: Minneapolis/St. Paul : West Pub. Co., 1995}, url = {http://www.gbv.de/dms/goettingen/248735446.pdf}, url = {http://www.gbv.de/dms/goettingen/248735446.pdf}, url = {https://katalog.ub.tu-freiberg.de/Record/0-1605281379} }