TY  - BOOK
AU  - Battle, Jean Allen,
AU  - Shannon, Robert Leroy,
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 60405473
SN  - 2
PY  - 1974///46
CY  - New York
PB  - Harper & Row
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Education
N1  - Includes bibliographical references; 5
ER  -