@inproceedings{95f2dbc9193d430c89fef3ac37344cdf,
title = "Black weathering of Bentheim and Oberkirchen sandstone",
keywords = "Conf.proc. > 3 pag",
author = "TG Nijland and CW Dubelaar and {van Hees}, RPJ and TJM Linden",
year = "2004",
language = "Undefined/Unknown",
publisher = "Icomos",
pages = "27--34",
editor = "D Kwiatkowski and R L{\"o}fvendahl",
booktitle = "10th International congress on deterioration and concervation of stone",
note = "10th International congress on deterioration and concervation of stone ; Conference date: 27-06-2004 Through 02-07-2004",
}