1. Discrimination of rock types and detection of hydrothermally altered areas in south-central Nevada by the use of computer-enhanced ERTS images : a detailed description of the development and application of a remote-sensing technique for geologic exploration Publication/Creation: Washington : U.S. Govt. Print. Off, 1974 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no.882-885. Access & Availability: Loading