SPRIESTERSBACH, JULIUS - Beitrag zur Kenntnis der Fauna des rheinischen Devon.

1935. Jahrbuch der Preussischen Geologischen Landesanstalt zu Berlin Bd. 55; pp. 475-525, 3 fig. 10 plts. plus descript. pages h.t. of which 2 folding-out, mostly with corals, brachiopods and molluscs. Orig. extract, stapled, plain new wrps. contents very good.