Hagen i.W., Hermann Risel 1888 pp.95-122 with 7 ills., 25cm., cart. (marbled plates, spine in cloth with engilded title), small stamp, in the series "Deutsche Zahnheilkunde in Vorträgen herausgegeben von Adolph Witzel" Heft 4
Hagen i.W., Herman Risel 1889 pp.121-200 with 3 ills., 24cm., nice cart.binding, in the series "Deutsche Zahnheilkunde in Vorträgen" Heft 5, small stamp, else VG, rare