1
by Helsper, Werner, Dreier, Lena, Gibson, Anja, Kotzyba, Katrin
Published 2018
Springer Fachmedien Wiesbaden
Subjects: '; ...School management and organization...

2
by Kramer, Rolf-Torsten, Helsper, Werner, Thiersch, Sven, Ziems, Carolin
Published 2009
VS Verlag für Sozialwissenschaften
Subjects: '; ...School management and organization...

3
by Helsper, Werner, Ullrich, Heiner, Stelmaszyk, Bernhard, Höblich, Davina
Published 2007
VS Verlag für Sozialwissenschaften
Subjects: '; ...School management and organization...