TY  - BOOK
AU  - Mansfield,Edwin
TI  - Economics: principles, problems, decisions 
SN  - 039395708X
AV  - HB171.5 .M266 1989
U1  - 330 19
PY  - 1989///
CY  - New York
PB  - Norton
KW  - Economics
N1  - Includes bibliographical references and index
ER  -