TY  - BOOK
AU  - Wiren,Alexis R.
AU  - Heyel,Carl
TI  - Practical management research / 
U1  - 658.57 WIR H 
PY  - 1945///.
CY  - New York : 
PB  - McGraw-Hill Book Company, Inc., 
KW  - Industrial efficiency
KW  - Industrial management
KW  - Industrial organization
N1  - Includes index.
ER  -