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Letter to H. Rijken van Olst
Letter to H. Rijken van Olst
Letter to Nederlandse Economische Hogeschool, Rotterdam
Letter to Nederlandse Economische Hogeschool, Rotterdam
Letter to C.T. Stork
Letter to C.T. Stork
Letter to J.J. Polak
Letter to J.J. Polak
Letter to J.J. Polak
Letter to J.J. Polak
Letter to Institute of Social Studies
Letter to Institute of Social Studies
Letter to W. Lorey
Letter to W. Lorey
Letter to D.S. Fuller
Letter to D.S. Fuller
Letter to J.A.G. Sandberg
Letter to J.A.G. Sandberg
Letter to C. van den Berg
Letter to C. van den Berg
Letter to M.A. Jansen
Letter to M.A. Jansen
Letter to B.G.F. Buijs
Letter to B.G.F. Buijs
Letter to C.G.N. de Vooys
Letter to C.G.N. de Vooys
Letter to Ph.J. Idenburg
Letter to Ph.J. Idenburg
Letter to F. de Bosch Kemper-Jeghel
Letter to F. de Bosch Kemper-Jeghel
Letter to P. Hennipman
Letter to P. Hennipman
Letter to Koninklijke Nederlandse Akademie van Wetenschappen
Letter to Koninklijke Nederlandse Akademie van Wetenschappen
Letter recommending Ragnar Frisch for the membership of the KNAW. Sent by F. de Vries, J.G. Koopmans and Tinbergen.
Letter to Th. Limperg (Jr.)
Letter to Th. Limperg (Jr.)
Letter to T.S. Jansma
Letter to T.S. Jansma
With annex: Invitation to appointment of Dr. T.S. Jansma as professor.
Letter to C.A. Verrijn Stuart
Letter to C.A. Verrijn Stuart
Letter to B.A. Chait
Letter to B.A. Chait
Letter to C.R. IJmkers-Ruivenkamp
Letter to C.R. IJmkers-Ruivenkamp
Letter to A. Loveday
Letter to A. Loveday
Letter to Jacques Mayer
Letter to Jacques Mayer
Letter to F.M. Westerouen van Meeteren
Letter to F.M. Westerouen van Meeteren
With annex: Programme of rotary lectures