TY - RPRT TI - User's manual for the National Water Information System of the U.S. Geological Survey, Chapter 4, Water-Use Data System, Part 2, Aggregate Water-Use Data System AU - Howard A. Perlman PY - 1998 DO - 10.3133/ofr98575 UR - https://pubs.usgs.gov/publication/ofr98575 ID - ofr98575 ER -