TY  - BOOK
AU  - Du Plooy,G.M.
TI  - Communication research: techniques, methods and applications 
SN  - 0702156418
AV  - P91 .D8 2002
PY  - 2002///
CY  - Lansdowne
PB  - Juta & Co. Ltd.
KW  - Communication
N1  - Includes bibliographical references and index
ER  -