@article{Birkenfeld+2010+61+69,
url = {https://doi.org/10.3790/sfo.59.3.61},
title = {Kleine Klassen und gute Luft – warum sind die Grundschulen auf dem Land besser?},
title = {},
author = {Florian Birkenfeld},
pages = {61--69},
volume = {59},
number = {3},
journal = {Sozialer Fortschritt},
doi = {doi:10.3790/sfo.59.3.61},
year = {2010},
lastchecked = {2010-03-01}
}