Hudak, Paul F. Principles of hydrogeology / by Paul F. Hudak - 3rd ed. - Boca Raton, Florida. : CRC, 2005 - 236 p. : col. ill. ; 25 cm. Includes bibliographical references (p. [221]-228) and index ISBN: 0849330157 (alk. paper) RM221.03 Subjects--Topical Terms: Hydrogeology