Front Matter

p.111

Aggregation of Variables in Dynamic Systems
Herbert A. Simon
Albert Ando

p.139

On the Cost of Approximate Specification in Simultaneous Equation Estimation
Franklin M. Fisher

p.171

The Graduation of Income Distributions
Peter R. Fisk

p.186

Behavioristic Foundations of Utility
Patrick Suppes

p.203

Aggregation in Leontief Matrices and the Labour Theory of Value
M. Morishima
F. Seton

p.221

A Note on "Aggregation in Leontief Matrices and the Labour Theory of Value"
Leif Johansen

p.223

Nonlinear Programming by the Simplex Method
H. O. Hartley

p.238

A Note on the Residual Variance Estimation in Simultaneous Equations
A. L. Nagar

p.244

A Note on the General Possibility Theorem of the Social Welfare Function
Yasusuke Murakami

p.247

On the Existence of General Equilibrium: Some Corrections
Lionel W. McKenzie

p.249

Letter to the Editor
R. L. Basmann
L. I. Bakony

p.271

Announcement of the December, 1961 Meetings

p.271

Announcement of the European Meeting

p.271

Announcement of the Summer Meeting

p.272

Treasurer's Report

p.274

Accountants' Opinion

p.275

News Notes

Back Matter