1. Johnstown-western Pennsylvania storm and floods of July 19-20, 1977 Author/Creator: Hoxit, Lee R., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1982 Resource Type: Book Access & Availability: Loading
2. Johnstown-western Pennsylvania storm and floods of July 19-20, 1977 Author/Creator: Geological Survey (U.S.) Publication/Creation: Alexandria, Va. : For sale by the Distribution Branch, U.S. Geological Survey Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1207-1211. Access & Availability: Loading