TY  - BOOK
AU  - Perlman, Richard.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 70493057
SN  - 2
PY  - 1973///46
CY  - New York
PB  - McGraw-Hill
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Economic aspects
KW  - Education
KW  - United States
N1  - Includes bibliographical references; 5
ER  -