TY  - BOOK
AU  - Scheerens,J.
TI  - Effectiveness of time investments in education: insights from a review and meta-analysis 
T2  - Springerbrief in education
SN  - 9783319009230
PY  - 2013///
CY  - New York
PB  - Springer
UR  - http://www.loc.gov/catdir/enhancements/fy1314/2013941510-t.html
ER  -