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P r o f . D r . K . rLomaniiik,
Sakola GlÓwna Planowania i
Statystyki,
Rakowiecka 6,
Warszawa. Polen.

5th June 195->.
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Dear " r o f e s s o r R o m a n i u k ,
Thank y o u vcrj m u c h f o r your invitation of Flay 9 t h , v;hich
I a m glad to a c c e p t . !.Iy friend M r . K l a a s s e n is absent a n d will
answer y o u l a t e r . I should be grateful f o r f u r t h e r inforueitxon
w i t h regard to the exact dates of t h e c o n f e r e n c e . 1 shall be glai
to bive a lecture anC I w o n d e r w h i c h subject y o u would ^.rofer.
I could read about
(a)'Tconomic I.Iodels aoed by the Ketherlands Planning jDureau
or about
(b)"Dynamic imput-out„at analysis f o r industrialization „lanning
I hope y o u w i l l l e t m e have y o u r c h o i c e .
V/ith re>.eated tnanks I am,
y o u r s very sincercl.c,
(J.Tinbergen).

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