TY  - BOOK
AU  - Pratt,Gordon
AU  - Pratt,Gordon
AU  - Harvey,Susan
TI  - Information economics: costs and prices of machine-readable information in Europe 
U1  - 338.4701078 
PY  - 1976///
CY  - London
PB  - Aslib
KW  - Information services
KW  - Europe
KW  - Information storage and retrieval systems
ER  -