Description de la faune de l'étage Landenien inférieur de Belgique.
1878. Reprint: Ann. Soc. Malacol. Belg. T. XI (1876); pp. 1-52, 5 plts. plus descript. pages h.t. (one with shark teeth, others with molluscs). Orig. wrps. with libr. stamp, spine a bit worn, contents very good.
Sur la constitution lithologique de quelques charbons du bassin houiller d'Andenne.
1955. Assocoation pour l'Étude de la Paléontologie et de la Stratigraphie Houillères Publication No. 21; pp. 231-259, 3 fig. 2 plts. h.t. wit microphot. Plain half cloth, cancelled libr. stamp on title page, lg4to.
Étude micro-tectonique dans les Ardennes Luxembourgeoises.
1953. Diss. Univ. Utrecht. 60 pp. 12 fig. 4 plts. h.t. folding-out, with map, sections and diagrams, 1 txtplt. Orig. wrps. with libr. stamp & ticket, front cover with stain along right-hand margin, so covers not very nice, but contents very good, lg4to.