TY  - BOOK
AU  - Koch, Richard
TI  - The 80/20 principle : : the secret of achieving more with less 
SN  - 0-385-49174-3
PY  - 1998///
CY  - New York : 
PB  - Currency Books
KW  -   Time management
KW  - Labor productivity -- Psychological aspects
N1  - Includes acknowledgement and notes
ER  -