Mondriaaneffect : eindverslag / Mark Schoute Ontzuring van papier : een redding of een tijdbom / J.B.G.A. Havermans ; TNO Institute of Industrial Technology study of the effects of iron and copper on the degradation of paper and evaluation of different conservation treatments / H.J. Porck, W. Castelijns environment and deterioration report Adhesive testing at the Canadian Conservation Institute : an evaluation of selected poly(vinyl acetate) and acrylic adhesives / by Jane.L. Down [et al.] study of the cause of damage on a pair of books / J.B.G.A. Havermans ; TNO Institute of Industrial Technology Kunstmatige veroudering onder invloed van licht / Judith H. Hofenk de Graaff