TY  - BOOK
AU  - Crowley,David
AU  - Paul Heyer
TI  - Communication in history:  : technology, culture and society
SN  - 0-205-48388-7
AV  - P90.C62945 
PY  - 2007///
CY  - Boston
PB  -  : Inc Pearson Education
KW  - Communication-History
KW  -  Mass media- History
N1  - Includes bibliographical references and index
ER  -