Butterworths, London, 1978 reprint of 1976 edition.  ISBN 0-408-70712-7.  Hard cover, 270 pages including Index.  Boards show a bit of corner and spine end wear, some rubs and light scratches.  Binding sound; some fox spots on outer page block.  Old water mark at lower fore-edge corner of first several pages; remainder of interior clean and unmarked.  Colour frontis; mostly black & white with some colour photos, illustrations, graphs and drawings.  ‘The chapters of this book consist substantially of papers presented at a Congress in Lisbon of the International Institute for Conservation of Historic and Artistic Works in October 1972 on Conservation of Paintings and the Graphic Arts.  … are organized on the principle of selecting aspects of a particular subject in which there is active current development or interest, and inviting the leading exponents to contribute reports of recent research or up-to-date reviews.’ (from Preface)