1973 234 p., 33 plates, small 4to, publisher’s cloth. A very good copy.A well-illustrated monograph with many new species of Mesozoic shells from Slovakia. Ammonites form the largest part. There are separate chapters on bivalves and gastropods (with 10 plates). Written by the Slovakian palaeontologists and ammonite specialist Vanda Kollárová-Andrusovová (1921–2004), and Mária Kochanová (1933-2017).