Description
Item Description:In scope of the U.S. Government Publishing Office Cataloging and Indexing Program (C&I) and Federal Depository Library Program (FDLP).
"National Water-Quality Assessment Program."
GPO Cataloging Record Distribution Program (CRDP).
Physical Description:1 online resource (ix, 120 pages) : illustrations, maps (some color).
Bibliography:Includes bibliographical references (pages 107-111).