Frondel, Judith Weiss, 1912- Glossary of uranium- and thorium-bearing minerals, [electronic resource] / by Judith Weiss Frondel and Michael Fleischer.. — 2d ed.. — Washington, : U.S. Govt. Print. Off.,, 1952.. — iii, 25 p. 27 cm. — (Geological Survey circular 194). - Geological Survey (U.S.). Circular ; 194. .
"The first edition of this work was published as U. S. Geological Survey Circular 74 in April 1950. This second edition contains additions, revisions, and corrections and brings the glossary up to date as of January 1952."