TY  - BOOK
TI  - Purinton Practical course in personal efficiency
AV  - BJ1611 .P87
PY  - 1919///
CY  - New York
PB  - Independent Corporation.
KW  - Éxito
KW  - Eficiencia
KW  - Personal Efficiency
N1  - Son 6.v.; elv.2. está en P43A; H162; 1 v. How to measure your effciency.- 2 v. How to get ahead.- 3 v. How to keep well.- 4 v. How to improve your finances.- 5 v. How to organize your work.- 6 v. How to be efficient at home.- 7 v. How to plan your life
ER  -