TY  - BOOK
AU  - Certo,Samuel C.
TI  - Supervision: concepts and skill building 
SN  - 9780072284041 (pbk.)
U1  - 658.302 
PY  - 2000///
CY  - Boston, Mass.
PB  - McGraw-Hill/Irwin
KW  - Supervision of employees
ER  -