All participants to the Study-Week have received
all the papers in advance. At the Study-Week each
paper has been discussed both in a group of specialists
 (*) and in a plenary session, except for two
papers (STONE and FRISCH) which have been discussed
 directly in plenary session. The papers have
been put herve in a succession which is as close as
possible to the chronological order of presentation
and discussion.

(*) 1st group: StoNE (Chairman), DORFMAN, JOHNSON,
Koopmans, MAHALANOBIS, MALINVAUD, MORISHIMA,
PASINETTI, SCHNEIDER,
znd group: LEONTIEF (Chairman), ArLAIS, FISHER
FriscH, HaavELMO, IsArp, THEIL, Woup.