TY  - BOOK
AU  - Seligman,Edwin R.A.
TI  - Principles of economics, with special reference to American conditions
T2  - American citizen series
U1  - 330 
PY  - 1929///
CY  - New York, N.Y.
PB  - Longmans, Green
KW  - ECONOMIA
N1  - Incluye bibliografía
ER  -