8vo - 21.5 x 13 cm.; 647 pp. The text is in French. Patterned gray/white paper over boards with red lettering on the spine and the front board. This is volume I of the 4 volume set of Bouyer's opus and was first published in 1918. Four indices are present: Index des sujets traités, Index biblique, Index des auteurs anciens, Index des auteurs modernes.The spine is darkened, the lower fore corners are bumped and the spine tips show mild wear. Otherwise the book is very clean with a tight binding. A clear and removable archival cover has been fitted.