Manners, G. (1971). The changing world market for iron ore, 1950-1980: An economic geography. Published for Resources for the Future, Inc. by the Johns Hopkins Press.

Manners, Gerald. The Changing World Market for Iron Ore, 1950-1980: An Economic Geography. Baltimore: Published for Resources for the Future, Inc. by the Johns Hopkins Press, 1971.

Manners, Gerald. The Changing World Market for Iron Ore, 1950-1980: An Economic Geography. Published for Resources for the Future, Inc. by the Johns Hopkins Press, 1971.