TY - BOOK ID - 125001434 TI - Petrography of radioactive tertiary igneous rocks, Front Range mineral belt, Colorado AU - Wells, John David AU - Geological Survey (U.S.) AU - U.S. Atomic Energy Commission PY - 1960 PB - [Washington, D.C.] : Washington : United States Department of the Interior, Geological Survey, United States Government Printing Office. DB - UniCat KW - Igneous rocks KW - Petrology KW - Igneous rocks. KW - Petrology. KW - Colorado UR - https://www.unicat.be/uniCat?func=search&query=sysid:125001434 AB - ER -