TY  - BOOK
AU  - Cook, David R.,
AU  - LaFleur, N. Kenneth,
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 2
PY  - 1975///46
CY  - Boston
PB  - Allyn and Bacon
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Research
KW  - Education
N1  - Includes bibliographies and index; 5
ER  -