Evans, Norman A., authorColorado A & M College, publisher2017-07-172017-07-171954https://hdl.handle.net/10217/182564CER54NAE32.Includes bibliographical references (page 14).1954.reportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Filters and filtrationWellsText