Title: Opredelitelʹ morskikh pliot͡s︡en-pleĭstot͡s︡enovykh molli͡u︡skov Severo-Vostoka evropeĭskoĭ chasti SSSR
Subjects: Fossil Mollusks, Paleontology
Places: European Russia, Northern Russia
Time periods: Pleistocene, Pliocene