@book{ Solr-10310199, title = {USAF pilotage chart.}, editor = {Aeronautical Chart and Information Center (U.S.)}, address = {Washington, D.C.}, publisher = {Aeronautical Chart and Information Center}, year = {1949}, note = {Relief shown by contours, shading, gradient tints, and spot heights.}, note = {Each sheet includes index to adjoining sheets.}, }