In Russian. Zakharov, Viktor Alexandrovich. Late Jurassic Early Cretaceous bivalve molluscs of northern Siberia and their conditions of existence. Moscow: Science, 1970. Pozdneyurskie rannemelovye dvustvorchatye mollyuski severa Sibiri i usloviya ikh sushchestvovaniya. In Russian /Late Jurassic Early Cretaceous bivalves of northern Siberia and their conditions of existence . 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. SKU6784317