Geological results of the exploration for oil in Netherlands New Guinea / carried out by the Nederlandsche Nieuw Guinee Petroleum Maatschappij 1935-1960 ; comp. by W.A. Visser and J.J. HermesGeological map of Eastern Camaguey and Western Oriente, Cuba / by J.J. HermesGeological results of the exploration for oil in Netherlands New Guinea / carried out by the Nederlandsche Nieuw Guinee Petroleum Maatschappij 1935-1960 ; comp. by W.A. Visser and J.J. HermesGeological results of the exploration for oil in Netherlands New Guinea / W.A. VisserGeological results of the exploration for oil in Netherlands New Guinea / W.A. Visser