Hong Kong and Lema Islands.
Great Britain.War Office.General Staff.Geographical Section.
[London] : War Office,
1938.
Relief shown by contours and spot heights. Depth shown by bathymetric isolines.
"Published at the War Office, 1938."
"Drawn and heliographed at O.S. 1937. Printed at W.O. 1938."
(2 copies)