TY  - BOOK
AU  - Marshal, Alfred
TI  - Principles of Economics
PY  - 1985///
CY  - New York
PB  - Macmillan & Co
KW  - Mechaical
UR  - http://192.168.3.1/ebooks/link/ebook/Mechanical/Principles of Economics by Alfred marshal.pdf
ER  -