TY  - BOOK
AU  - Fetter,Frank A.
TI  - Principles of economics: with applications to practical problems 
U1  - 330 
PY  - 1904///
CY  - New York, N.Y.
PB  - The Century Co.
KW  - ECONOMIA
UR  - http://www.gutenberg.org/files/40077/40077-h/40077-h.htm
ER  -