1. Seismic refraction survey of Pleistocene drainage channels in the lower Great Miami River Valley, Ohio, Author/Creator: Watkins, Joel S., 1932-2016 Publication/Creation: Washington : U.S. Govt. Print. Off, 1971 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 605-609. Access & Availability: Loading
2. Seismic detection of near-surface cavities, Author/Creator: Watkins, Joel S., 1932-2016 Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 595-599. Access & Availability: Loading
3. Regional geologic implications of the gravity and magnetic fields of a part of eastern Tennessee and southern Kentucky, Author/Creator: Watkins, Joel S., 1932-2016 Publication/Creation: Washington : U.S. Govt. Print. Off, 1964 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 516-520. Access & Availability: Loading