@book{Hippchen+2022, url = {https://doi.org/10.3790/9783428486649}, title = {Stickstoffausgasungen aus der Agrarproduktion als Umweltproblem}, title = {}, author = {Jürgen Hippchen}, publisher = {Duncker & Humblot}, address = {}, doi = {doi:10.3790/9783428486649}, isbn = {9783428486649}, year = {1997}, lastchecked = {2022} }