OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Tolstoi : [catalogue of] a loan exhibition from Soviet museums presented by the British Library [Reference Division], held in the Special Exhibitions Gallery of the British Museum, 3 June-30 August 19. ISBN 0714103845. Published by British Museum Publications Ltd for the British Library in 1976. Publication and catalogue information, links to buy online and reader comments.
![Tolstoi : [catalogue of] a loan exhibition from Soviet museums presented by the British Library [Reference Division], held in the Special Exhibitions Gallery of the British Museum, 3 June-30 August 19](http://covers.openlibrary.org/b/id/4667496-M.jpg)