Purchase recordings for 2013 William A. McEllhiney Distinguished Lecture Series in Water Well Technology — Groundwater Spreadsheets: Efficient and Practical Resource for Solving Simple and Complex Flow, Pollution, and Environmental Problems

$25 members / $75 nonmembers / free for attendees

Purchase all recordings the 2013 NGWA Groundwater Expo and Annual Meeting

$275 members / $400 nonmembers / free for attendees