Topographic Instructions of the United States Geological Survey: ER-55 Plotter Procedures
Dublin Core
Title
Topographic Instructions of the United States Geological Survey: ER-55 Plotter Procedures
Creator
U.S. Dept. of the Interior
Publisher
U.S. Government Printing Office
Date
1961
Collection
Citation
U.S. Dept. of the Interior, “Topographic Instructions of the United States Geological Survey: ER-55 Plotter Procedures,” Gallery, accessed April 25, 2024, https://gallery.lib.umn.edu/items/show/2294.