General series
University Microfilms International
An authorized facsimile printed by microfilm/xerography
by Paul Taubman and Terence Wales
University Microfilms International 1985 General series 101
Available at 2 libraries
University Microfilms International 1977 General series no. 73
Available at 4 libraries
by Gerhard Bry, assisted by Charlotte Boschan
University Microfilms 1967, c1960 General series no. 68
Available at 15 libraries
by Harold Barger
University Microfilms 1966 General series No.58
Available at 1 libraries
Available at 14 libraries
by Solomon Fabricant assisted by Robert E. Lipsey
National Bureau of Economic Research c1952 General series no. 56
Available at 18 libraries