TY  - BOOK
AU  - Mercer,David
TI  - Marketing strategy: the challenge of the external environment 
SN  - 0761958754
AV  - HF5415.15 .M34 1998
PY  - 1998///
CY  - London 
PB  - Sage in association with Open University Business School
N1  - Includes bibliographical references and index
ER  -