TY  - BOOK
AU  - Koch, Richard
TI  - The 80/20 principle : : the secret of achieving more with less 
SN  - 9781857886849
U1  - 650.1 20th ed.
PY  - 2017///
CY  - London
PB  - Nicholas Brealey Publishing, 
KW  - Time management
KW  - Labor productivity -- Psychological aspects
KW  - Industrial efficiency -- Psychological aspects
ER  -