The mineral industry of the Far East : econommic and geological, report on the mineral resources and mineral industries of the Far Eastern countries : China with Manchuria, Japan with its dependencies Korea and Formosa, Russian Far East, Philippines and Indo-China, and general survey of the Far Eastern mining industry on the background of the world's mineral market / cby Boris P. Torgashev, prefaced by Dr. Wong Wen Hao and Dr. P.I. Polevoy.