TY  - BOOK
AU  - Popham Estelle L
TI  - Teaching learning system for business education
SN  - 0070505047
U1  - T:3(X5), L5 
PY  - 1975///
CY  - New York
PB  - McGraw Hill U. S. A.     
KW  -  Education
KW  - Teaching Techniques
ER  -