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1
by Frei, G., Stammbach, U.
Published 1992
Birkhäuser
Table of Contents: “... Berufung an die Columbia University in New York (1926) -- 7 Aufenthalt in Princeton (1928/29) -- 8 Weggang...”
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2
by Hotelling, Harold
Published 1990
Springer New York
“... to the Butler Library, Columbia University. This is a most appropriate place for them to reside...”