TY  - BOOK
AU  - Koopmans, Tjalling C.
TI  - Three essays on the state of economics science
SN  - 0678013977
U1  - 330.1 
PY  - 1991///
CY  - New York
PB  - Augustus M. Kelley
KW  - Economics
N1  - Includes bibliographical references and index
ER  -