TY  - BOOK
AU  - Ainscow,Mel
AU  - Tweddle,David A.
TI  - Preventing classroom failure: an objectives approach 
SN  - 0471275646
PY  - 1979///
CY  - New York
PB  - Wiley
KW  - Learning disabilities
N1  - Includes indexes and Bibliography : p.  193 -197
ER  -