Dr J.R*N, BTOÏ®,
Departcient of applied economics,
MaraMll L i b r a r y ,
Qanibpidfl|e
1 +•
/x°r®®^°^ Tinbergen i s on leave but aaked me to answer vtmi.
l e t t e r of J u l y 2 1 . The tenn " d e c i s i o n m o d a l a - ^ a i n t r o d u c S d b v
£'*^V®5L^'' ^ U.N.Paper 19i^9 r e f e r r e d t o by P r o ? T l n b S - ^ i n h i s
ur?h?eS?S"trJ?r!;f°?S^'S%-^^^ ^ ^ ° ^ lit to be'Slft^Jook
tet
noS.
Ü.F.Paper, but the book i s not a t home
of SeptelCSf-s^Sr^Sf?? ^VrJSf/?S ^ f ^ i ^ ^ i i ï bTb^c^Sf^^
Yours very elrcerely.
secretary.
