TY  - BOOK
AU  - McLuhan,Marshall
TI  - Understanding media: the extensions of man,
AV  - P90 .M26
U1  - 301.2 
PY  - 1964///]
CY  - New York
PB  - McGraw-Hill
KW  - Communication
KW  - Communication and traffic
KW  - Technology and civilization
ER  -