@book{2023,
url = {https://doi.org/10.3790/9783896448026},
title = {Pflastersteine},
title = {Ulmer Wege zur Nachhaltigkeit},
author = {},
publisher = {Verlag Wissenschaft & Praxis},
address = {},
doi = {doi:10.3790/9783896448026},
isbn = {9783896448026},
year = {1998},
lastchecked = {2023}
}