TY  - BOOK
AU  - Certo,Samuel C.
TI  - Supervision : : concepts and skill building / 
SN  - 0072488395
U1  - 658.302 
PY  - 2003///
CY  - Boston, IL.
PB  - Mc-Graw-Hill, 
KW  - Business management
KW  - Supervision of employees
N1  - Includes bibliographical references and index
ER  -