TY - BOOK AU - National Research Council TI - Preparing for the Twenty-First Century: A Report to the USGS Water Resources Division SN - 978-0-309-07844-3 DO - 10.17226/1850 PY - 1991 UR - https://nap.nationalacademies.org/catalog/1850/preparing-for-the-twenty-first-century-a-report-to-the PB - The National Academies Press CY - Washington, DC LA - English KW - Earth Sciences ER -