In Russian. Sanin, Vyacheslav Yakovlevich. Early Cretaceous kthenodontides (Bivalvia) of northern Siberia. Novosibirsk: Science. Siberian Branch, 1976. Rannemelovye ktenodontidy (Bivalvia) severa Sibiri. In Russian /Early Cretaceous kthenodontides (Bivalvia) of northern Siberia . All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU6996296