COVID-19 Update - Important Message
Due to the current COVID-19 crisis, shipping for NGWA Bookstore orders may be delayed. Additional, at this time, NGWA is only offering standard ground shipping. One-day, two-day, and international shipping has been temporarily discontinued.
Aquifer Boundaries and the Theory of Images (DVD)
By John S. McLean
Produced by the U.S. Geological Survey
This is a DVD of a 1997 presentation by John S. McLean of the U.S. Geological Survey. It is highly regarded in the subject of aquifers that cross boundaries.
Runtime 34 minutes
NGWA member — $20.00
Nonmember — $25.00