TY  - BOOK
AU  - McLuhan, Marshall.
TI  -  Understanding media:  the extensions of man / Marshall McLuhan
SN  - 9780415253970
AV  - P90.M35 1964 
PY  - 1964///
CY  - Cambridge, Mass. : 
PB  - MIT Press, 
KW  - Mass media
KW  - Communication
KW  - Communication and technology
ER  -