TY  - BOOK
AU  - Valett, Robert E.
TI  - Modifying children's behavior : a guide for parents and professionals
PB  - Fearon
PY  - 1969
T2  - A Pacemaker book
EP  - vi, 66 p.
UR  - https://ci.nii.ac.jp/ncid/BA44418490
ER  -