@book{ BA2204334X, author = "Schulin, R. (Rainer)", title = "Soil monitoring : early detection and surveying of soil contamination and degradation", publisher = "Birkhäuser Verlag", year = "1993", series = "Monte verità : proceedings of the Centro Stefano Franscini Ascona", number = "", URL = "https://ci.nii.ac.jp/ncid/BA2204334X" }