TY  - BOOK
AU  - Roscher,Wilhelm
AU  - Wolowski,L.
AU  - Lalor,John J.
TI  - Principles of Political Economy
AV  - HB 
PY  - 2009///
PB  - Project Gutenberg
KW  - Economics
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/27698
ER  -