International Indian Ocean Expedition & Pioneer (Ship, built 1943). (1965). International Indian Ocean Expedition, USC&GS Ship Pioneer, 1964. U.S. Dept. of Commerce, Coast and Geodetic Survey; [for sale by the Supt. of Docs., U.S. Govt. Print. Off..

International Indian Ocean Expedition and built 1943) Pioneer (Ship. International Indian Ocean Expedition, USC&GS Ship Pioneer, 1964. [Washington]: U.S. Dept. of Commerce, Coast and Geodetic Survey; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1965.

International Indian Ocean Expedition and built 1943) Pioneer (Ship. International Indian Ocean Expedition, USC&GS Ship Pioneer, 1964. U.S. Dept. of Commerce, Coast and Geodetic Survey; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1965.