Authors: Isaac, Peter C.G. --- Fair, Gordon M.
Year: 1953 Publisher: London Spon

Authors: Rosenau, Milton J. --- Myerson, Abraham --- Fair, Gordon M. --- Trask, John W. --- Doering, Carl R. --- et al. Waite, J. Herbert --- Matsner, Eric M.
Year: 1940 Publisher: New-York London D. Appleton-Century Company