TY  - BOOK
AU  - McLuhan,Marshall
TI  - Understanding media: the extentions of man 
T2  - Signet books of interest
AV  - P90 .M26 1964
U1  - 301.2 
PY  - 1964///
CY  - New York
PB  - New American Library
KW  - Computer
KW  - Networks
ER  -