TY  - BOOK
AU  - Kotler, Philip, author.
AU  - Armstrong, Gary (Gary M.), author.
TI  - Principles of marketing
SN  - 0137053606
U1  - DC 658.8 1989
PY  - 1989///
CY  - Englewood Cliffs, N.J.
PB  -  Prentice Hall, 
KW  - Marketing
N1  - Includes bibliographical references
ER  -