@Article{gh-20-34-1965,
AUTHOR = {Schiesser, F.},
TITLE = {Geographische Übungen an der Oberstufe der Mittelschule : Erfahrungen am kantonalen Gymnasium Winterthur},
JOURNAL = {Geographica Helvetica},
VOLUME = {20},
YEAR = {1965},
NUMBER = {1},
PAGES = {34--46},
URL = {https://gh.copernicus.org/articles/20/34/1965/},
DOI = {10.5194/gh-20-34-1965}
}