TY  - BOOK
AU  - Leffingwell,William H., x
AU  - x
TI  - Textbook of office management: x
SN  - x 
U1  - 651/LET 
PY  - 1950///
CY  - N.Y.
PB  - McGraw-Hill
KW  - Office management
KW  - Management
ER  -