Cover title.,Issued also as Senate Document no. 19, 90th Congress. 1st session.,Includes bibliographies.,LSO ID: umlr000033.

Includes index.,Bibliographical foot-notes.

LSO ID: umlr000015.,Bibliography: pages 109-112.

Bibliography: pages 103-105.,LSO ID: umlr000052.

LSO ID: umlr000011.,1. Springs -- General Information. 2. Description and Flow Of Individual Springs.,Includes bibliographical footnotes and index.