TY  - BOOK
AU  - Kotler,Philip
AU  - Armstrong,Gary
TI  - Principles of marketing
SN  - 0137216890
AV  - HF5415 
U1  - 658.8 
PY  - 1991///
CY  - Englewood Cliffs, London
PB  - Prentice-Hall International
KW  - Marketing
N1  - Previous ed, 1989
ER  -