TY  - BOOK
AU  - Bye, Raymond, T.
AU  - Vaish, M. C.
TI  -  Principles of economics
U1  - 330.101.8 
PY  - 1956///
CY  - New York
PB  - Appleton-Century-Crofts
KW  - economics
KW  - business demography
ER  -