TY  - BOOK
AU  - Ferber, Robert
AU  - Verdoorn, P.J.
TI  - Research methods in economics & business
U1  - 330.1 FER-; 
PY  - 1962///
CY  - New York
PB  - Macmillan
KW  - Economics - Methodology
KW  - Business - Research
KW  - Business - Methodology
KW  - Economics - Research
ER  -