TY  - BOOK
AU  - Butler, F. Coit.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 877780277
SN  - 2
PY  - 1972///46
CY  - [Englewood Cliffs, N.J
PB  - Educational Technology Publications
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Study and teaching
KW  - Industrial arts
N1  - Bibliography: p. 345-353; 5
ER  -