TY  - BOOK
AU  - Holtzman,Paul D.
AU  - Ecroyd, Donald H.
AU  - Hanna, Michael S.
AU  - Roberts, Thomas M.
TI  - Communication concepts and models
PY  - 1976///
CY  - Skokie, Illinois
PB  - National Textbook Company
KW  - Communication
ER  -