@book{2021,
url = {https://doi.org/10.3790/9783428494231},
title = {Raumplanung und Raumforschung in der DDR},
title = {},
author = {},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428494231},
isbn = {9783428494231},
year = {1998},
lastchecked = {2021}
}