A Twentieth Century Fund study
Twentieth Century Fund
Angus Maddison
The Twentieth Century Fund , G. Allen & Unwin 1964 A Twentieth Century Fund study
所蔵館66館
John O. Coppock
Twentieth Century Fund 1963 A Twentieth Century Fund study
所蔵館17館
by Jan Tinbergen
Twentieth Century Fund 1962 A Twentieth Century Fund study
所蔵館64館
Charles Cortez Abbott
Twentieth Century Fund 1953 A Twentieth Century Fund study
所蔵館14館