00411nam a2200121Ia 4500008004100000100002200041245002400063245003400087260000900121856006700130999001900197952007300216160531s9999    xx            000 0 und d  aDangermond, Jack.  aUnderstanding Earth  cby Jack Dangermond, Matt Artz  c2012  uhttp://www.gisday.com/resources/ebooks/understanding-earth.pdf  c295087d295087  001040aCLbCLd2016-05-31l0r2016-05-31 00:00:00w2016-05-31yCBE