"Army Map Service, U. S. Army, Washington, D. C. 137198. 1944. 8-44." "Compiled from Luzon 1:31,680, Office Dept. Engineer, Phil. Dept., No. 25B, 1914; Vertical Photograph, 1940; Oblique Photographs, 1940; San Carlos, Stereocompilation No. 2358-IV." Areas of vegetation and cultivation are shown. Includes coverage diagram.