@book{Ludwig+2011, url = {https://doi.org/10.3790/9783428535217}, title = {Planungsinstrumente zum Schutz des Bodens}, title = {}, author = {Rasso Ludwig}, publisher = {Duncker & Humblot}, address = {}, doi = {doi:10.3790/9783428535217}, isbn = {9783428535217}, year = {2011}, lastchecked = {2011} }