TY  - BOOK
AU  - Lipsey,Richard G.
AU  - Steiner, Peter O. 
AU  - Purvis, Douglas D.
TI  - An introduction to positive economics
SN  - 0297775979 :
AV  - HB171 . L66 1989
U1  - 330.1 
PY  - 1989///
CY  - London
PB  - Harper and Row
KW  - Economics
N1  - Includes bibliographical references and index
ER  -