TY  - BOOK
AU  - Hedde.W.G.
AU  - Hedde.W.G.
TI  - Patterns in communication
SN  - 0397402449
AV  - DUCE PN4121.H4 
PY  - 1975///
CY  - Newyork
PB  - J.B. Lippincott company
N1  - include index
ER  -