@Article{gh-33-113-1978,
AUTHOR = {Inhelder, H.},
TITLE = {Bildarbeit im Unterricht},
JOURNAL = {Geographica Helvetica},
VOLUME = {33},
YEAR = {1978},
NUMBER = {2},
PAGES = {113--115},
URL = {https://gh.copernicus.org/articles/33/113/1978/},
DOI = {10.5194/gh-33-113-1978}
}