Effectiveness of time investments in education : insights from a review and meta-analysis / Jaap Scheerens, editor ; with contributions from Jaap Scheerens, Maria Hendriks, Hans Luyten, Peter Sleegers and Cees Glas. - vii, 157 pages ; 24 cm. - Springerbrief in education. . - Springerbrief in education. .

9783319009230 RM222.66