by Thomas W. Dibblee, Jr.; edited by Helmut E. Ehrenspeck. Relief shown by contours and spot heights; depths shown by soundings. "Prepared in cooperation with the U.S. Forest Service, Angeles National Forest; California Dept. of Conservation, Division of Mines and Geology; and the U.S. Geological Survey." "Theodore Off Honorary Map." "First printing, April 2001". Includes quadrangle location map, and index to sources of geology and topography. Includes bibliographical references.
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