@inbook {Peschel.2013d, title = {Vergleichen und Recherchieren}, booktitle = {Perspektivrahmen Sachunterricht}, year = {2013}, pages = {148{\textendash}152}, publisher = {Verlag Julius Klinkhardt}, organization = {Verlag Julius Klinkhardt}, address = {Bad Heilbrunn}, author = {Peschel, Markus}, editor = {GDSU} }