TY  - BOOK
AU  - Varian, Hal R
AU  - Farrell, Joseph Shapiro, Carl 
TI  - The economics of information technology: an introduction
U1  - 338.47004 VAR  
PY  - 2004///
CY  - Delhi
PB  - Cambridge University press
N1  - Includes bibliographical references and index 
ER  -