00470cam a2200109Ia 450000500170000000800410001703500140005804100080007224501110008026000920019170000770028320260501142805.0930420s1990    enk           100 0 eng d  a154141825  aeng00aCleaning, retouching and coatings : summaries of the posters at the Brussels congress, 3-7 September 1990.  aLondon :bInternational Institute for Conservation of Historic and Artistic Worksc19901 aInternational Institute for Conservation of Historic and Artistic Works.