Iron-gall ink corrosion : proceedings European workshop on iron-gall ink corrosion, June 16 and 17, 1997 / [ed. by Hans van der Windt ; photogr.: … monografieën van nederlandse architecten Koen van Velsen, architect / Janny Rodermond ; fotogr.: Michel Boesveld ; [Engelse vert.: John Kirkpatrick]