TY - RPRT TI - A tabulation of K-Ar, Rb-Sr, and Pb-α ages obtained for materials within the United States (including Alaska and Hawaii) during the years 1965 through 1968 AU - Richard F. Marvin PY - 1974 DO - 10.3133/ofr741069 UR - https://pubs.usgs.gov/publication/ofr741069 ID - ofr741069 ER -