@book{ 0-027198642, title = {Evaluation: Beschreibung und Bewertung von Unterricht, Curricula und Schulversuchen ; Texte}, series = {Erziehung in Wissenschaft und Praxis}, author = {Wulf, Christoph}, editor = {Wulf, Christoph}, address = {München}, publisher = {Piper}, year = {1972}, isbn = {3492019854}, language = {German}, note = {Literaturangaben. - Literaturverz. S. 356 - 395}, url = {http://d-nb.info/730102564/04}, url = {http://digitale-objekte.hbz-nrw.de/webclient/DeliveryManager?pid=2851051&custom_att_2=simple_viewer}, url = {https://katalog.bibliothek.tu-chemnitz.de/Record/0-027198642} }