Princeton, N.J. : Van Nostrand, 1964

Westport, Conn., Greenwood Press 1972

London : Hutchinson University Library, 1959

Princeton, N. J. : Van Nostrand, 1962

London : J. Murray, 1966
2d ed.

[New York? Rand McNally, 1964

New York : Praeger, 1964

New York : McGraw-Hill, 1972
2d ed.

Bloomington : Dept. of Geography, Indiana University, 1965

New York, Greenwood Press, 1968

Columbia : University of South Carolina Press, 1969

Cambridge [England] : Cambridge University Press, 1973

Cambridge ; New York : Cambridge University Press, 1976

Cambridge [England] ; New York : Cambridge University Press, 1990

New York : Praeger, 1970

New York : F. A. Praeger, 1963

Harlow : Longmans, 1969

Cambridge [England] ; New York : Cambridge University Press, 1990

London, Hutchinson, 1971
5th (revised) ed.

Cambridge [England] ; New York : Cambridge University Press, 1979