Harrison, Jack E. 1924- Joints in Precambrian rocks Central City-Idaho springs Area Colorado / by J. E. Harrison and R. H. Moench. -- Washington : United States Government Printing Office, 1961 - 14 p. -- (Geological Survey Professional Paper ; 374-B). Subjects--Topical Terms: ColoradoPrecámbrico Universal Decimal Class. No.: 551.71/.72(788)