Two volumes of preprints representing working groups on preventative conservation, training in conservation and restoration, theory and history of conservation-restoration, scientific methods of examination of works of art, documentation, conservation and restoration of paintings, scientific study of paintings, sculpture and polychromy, mural paintings, mosaics and rock art, graphic documents, photographics records, ethnographic collections, wet organic and archaeological materials, textiles, leather, natural history collections, stone, glass and ceramics, metals, lacquer, furniture and wooden objects, characteristion and evaluation of resins, modern materials.