Paris: Desclee, De Brouwer [ 1941 ]. 97,  pages. Paper wrappers with integral flaps. First signature loose, some staining. Spine reglued. Front flyleaf corner clipped. A well read copy. Text in French. Good. Wraps. 
Appears to be a treatise on Christian dance. Many photomechanical illustrations. French text explains various dance moves, sometimes with photographs and many with stick figures to illustrate the movements.
Scarce, with less than a dozen copies in Worldcat/OCLC and none online as of this listing.