Buck, Richard D. "What Is Condition in a Work of Art?" Bulletin of the American Group, International Institute for Conservation of Historic and Artistic Works 12/1 (October 1971): 63-67.

Buck, Richard D. "What Is Condition in a Work of Art?" Bulletin of the American Group, International Institute for Conservation of Historic and Artistic Works 12/1 (October 1971): 63-67.