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PROF, DR J . TINBERGEN

THE HAGUE, 19 F e b r u a r y 195i<Sijaenlaan k^

I hereby declare to know Mr L.F. Mai'ineke
as one of my students who is devoting considerable
efforts to econometric and statistical work. His
B.A, examination ("Candidaatsexaïaen") showed good
marks for economics and sufficient marks for the
auxiliary subjects. His intelligence ia very good and
his personal attitude is nice.

Professor ox Mathematical Economics.,
Rotterdam School of
Kconomics.

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