TY  - BOOK
AU  - Ayres,C.E.
TI  - The theory of economic progress: a study of the fundamentals of economic development and cultural change 
T2  - Schocken paperbacks, SB33
AV  - HB171 .A9 1962
U1  - 330.1 
PY  - 1962///
CY  - New York
PB  - Schocken Books
KW  - Economics
ER  -