Paris: Gauthier-Villars 1892, 1906. 2 titles in one volume. VIII, 248, [V]-VII,  pages + 20 plates + -251 pages. Second title -207 pages. Half calf over marbled boards. Large 8vo. 6 1/2 x 9 3/4 inches. Light browning to pages. Near Fine. Boards. 
The first title, "Traite de photographie stereoscopique. Theorie et pratique," was originally issued with the 20 plates in a separate cloth-backed portfolio. Here the plates have been bound in. Both titles are scarce, with Fabre's work not present in the Epstean collection as of this writing. Both titles deal with the theory and practice of stereoscopy. This artform / photographic technique allows the photographer to take a photograph which can be viewed later in three dimensions. It is accomplished by taking the same image with 2 lenses slightly separated from one another, which when viewed through a stereoscope with similarly separated lenses allows the viewer to see depth in the image. A fascinating parlor trick since the 1850s and still something that wows the public who often hasn't seen it.
Both titles are scarce, with fewer than a dozen examples in book form in library systems participating in Worldcat/OCLC.