@Article{gh-23-89-1968,
AUTHOR = {B\"ar, O.},
TITLE = {Die Phosphate Marokkos},
JOURNAL = {Geographica Helvetica},
VOLUME = {23},
YEAR = {1968},
NUMBER = {2},
PAGES = {89--94},
URL = {https://gh.copernicus.org/articles/23/89/1968/},
DOI = {10.5194/gh-23-89-1968}
}