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PROF. DH J. TINBERGEN

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THE HAGUE, 22 June 1951
Sijzenlaan ^1

Mrs Jane Novick,
Editorial Secretary
The Econometric Society
The university of Chicago,
Chicago 37 (111)

Dear Mrs Novick,
The manuscript on "Determinateness and
Indetermlnateness of Economic Variables" by Prof. Goudriaan
has been sent to Professor Koopmans sometime around May
1950. Unfortunately I have no other copy at my disposition.
Sincerely yours.

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