1.
Elements of Linear Programing Economics Application : With Economic Applications
by Geary, R. C., Spencer, J. E.
ISBN: 9780028452302
List Price: $14.00
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Exercises in Mathematical Economics and Econometrics with Outlines of Theory
by Spencer, J. E., Geary, R. C.
ISBN: 9780852642252
List Price: $27.50