Preprints of the contributions to the New York on Conservation of stone and wooden objects, 7-13 June 1970. 1, Conservation of stone

London : International Institute for Conservation of Historic and Artistic Works, 1971.
Umfang/Format: 134 p. : ill. ; 30 cm.

Preprints of the contributions to the New York on Conservation of stone and wooden objects, 7-13 June 1970. 2, Conservation of wooden objects

London : International Institute for Conservation of Historic and Artistic Works, 1971.
Umfang/Format: 140 p. : ill. ; 30 cm.