TY - RPRT TI - Bibliography of tritium studies related to hydrology through 1966 AU - Edward C. Rhodehamel AU - Veronica B. Kron AU - Verda M. Dougherty PY - 1971 DO - 10.3133/wsp1900 UR - https://pubs.usgs.gov/publication/wsp1900 ID - wsp1900 ER -