RARE EARLY ARTIST BOOK, following MERZ's earlier Fibonacci book published in 1970 - this is a 2nd different artist book on the Fibonacci theme. Unpaginated (32pp) with b/w images of a work made on 12 April 1972 in Turin eating in a restaurant with the title ''a real sum is a sum of people' , VG in white card covers with small art & project sticker inside front cover.