机译:Geomaterials in the manuscript archive: the composition of writing sands and the regional distribution of writing-sand types in SW-Germany and northern Switzerland, 14th to 19th century
机译:Description and crystal structure of maghrebite, MgAl_2(AsO_4)_2(OH)_2?8H_2O, from Aghbar, Anti-Atlas, Morocco: first arsenate in the laueite mineral group