Relief shown by contours and spot heights. "Topography by D.C. Witherspoon with additional areas from maps my T.G. Gerdine and W.S. Peters." "Professional Paper No. 41, Plate XX."
Published in [Washington, D.C.] by the Geological Survey...
Wick # 2462 [New York : Asia Pub. Co., 1920] From: Asia, the American magazine on the Orient, vol. XX, no. 4 (May 1920). p. 365-372, 436 : ill. ; 31 cm.