TY  - BOOK
AU  - Welligton,C.Burleigh
AU  - Wellington,Jean
TI  - Teaching for critical thinking, with emphasis on secondary education 
U1  - 373 WEL 
PY  - 1960///.
CY  - New York : 
PB  - Mcgraw-hill Book  Company, 
KW  - Education, Secondary
KW  - Teaching
N1  - Includes bibliography and index.
ER  -