by Höper, Jan, Köller, Hans-Georg
Published in LUMAT (2018)

by Sundstrøm, Elina Maria, Killengreen, Siw Turid, Misund, Stig, Köller, Hans-Georg
Published in Nordina : Nordic studies in science education (09.04.2019)

by Köller, Hans-Georg, Olufsen, Magne
Published in Uniped (Lillehammer) (08.02.2013)

by Sundstrøm, Elina Maria, Killengreen, Siw T, Misund, Stig, Köller, Hans-Georg
Published in Nordina : Nordic studies in science education (2019)

by Hans-Georg Köller, Magne Olufsen
Published in Uniped (Lillehammer) (01.01.2013)

by Sundstrøm, Elina Maria, Killengreen, Siw Turid, Misund, Stig, Køller, Hans-Georg
Published in Nordina : Nordic studies in science education (2019)