TY  - BOOK
AU  - Hanan Mack, and others
TI  - Systems selling strategies:  How to justify premium   
T2  - American Management Association
SN  - 0814454607
U1  - X:514, L8 
PY  - 1978///
CY  - New York
PB  - AMACOM         
KW  - Salesmanship
N1  - Appendix: p 135-184
ER  -