TY  - BOOK
AU  - Hattie, John A C
TI  - Visibal learning: a synthesis of over 800 meta-analyses relating to achievement
SN  - 9780415476188
U1  - 370.1523 21st
PY  - 2009///
CY  - London
PB  - Routledge
KW  - LEARNING-LONGITUDINAL STUDIES; TEACHING-LONGITUDINAL STUDIES; EFFECTIVE TEACHING-LONGITUDINAL STUDIES; TEACHER EFFECTIVENESS-LONGITUDINAL STUDIES
ER  -