TY  - GEN
AU  - Certo, Samuel C.             
TI  - Supervision: concepts and skill building 
SN  - 0072987529 (alk. paper)
U1  - 658.302 
PY  - 2006///
CY  - Boston
PB  - McGraw-Hill/Irwin,2006
KW  - Supervision of employees
ER  -