@Article{gh-10-21-1955,
AUTHOR = {Meyer, W.},
TITLE = {Umbrien},
JOURNAL = {Geographica Helvetica},
VOLUME = {10},
YEAR = {1955},
NUMBER = {1},
PAGES = {21--23},
URL = {https://gh.copernicus.org/articles/10/21/1955/},
DOI = {10.5194/gh-10-21-1955}
}