B-33 Bibliography of Hydrogeologic Reports in Colorado Download Publication Details From the Preface: The following bibliography comprises all known published and unpublished public reports on groundwater conditions in Colorado through 1970. The report is in three alphabetical sections, Bibliography, Subject Index, and Miscellaneous Papers. The Bibliography section is a listing of the various authors, while the Subject Index lists the different counties and subjects with the respective authors. The Miscellaneous section lists those papers pertaining to subjects not otherwise listed under the counties. 39 pages. Digital PDF download. B-33D Citations Pearl, Richard Howard. “Bulletin 33 - Bibliography of Hydrologic Reports in Colorado.” Bibliography. Bulletin. Denver, CO: Colorado Geological Survey, Department of Natural Resources, 1971. https://doi.org/10.58783/cgs.b33.powa5700. CGS Publications. https://coloradogeologicalsurvey.org/publications/bibliography-hydrogeologic-reports-colorado/.