Publication(s) for absolute age

Bulletin 157 (2)--Progress Reports of the Kansas Basement Rocks Committee and Additional Precambrian Wells

by V. B. Cole , D. F. Merriam

11 p., 1962, $2.50

Full Version available online

Bulletin 199 (1)--Short Papers on Research in 1969

by D. E. Zeller, ed.

26 p., 1970, $2.50