Preliminary report on the investigation of the nickel resources of Nonoc Island Surigao, Mindanao - Wright, Wilford S.; Salazar, Arsenio (Manila Philippine Bureau of Mines, 1955)
"Published ... in cooperation with the Philippine Council for United States Aid and the United States International Cooperation Administration."
Mimeographed.
Keywords: Nickel mines and mineral resources -- Philippines -- Nonoc Island, Surigao; Mines and mineral resources -- Philippines -- Nonoc Island, Surigao