@book{ Solr-2555919, title = {Topographic and shaded relief maps of Venus}, series = {Atlas of Venus 1:50,000,000 topographic series ;}, series = {Miscellaneous investigations series (Geological Survey (U.S.)) ;}, editor = {Geological Survey (U.S.)}, editor = {United States. National Aeronautics and Space Administration}, address = {Reston, Va.}, publisher = {U.S. Geological Survey}, year = {1984}, note = {Coordinates: W 240⁰--E 240⁰/N 78⁰--S 65⁰.}, note = {Relief shown by contour lines and shading.}, note = {Title from envelope.}, note = {Text on both sheets.}, note = {"VRM planning chart V 50M 6/60 RT."}, }