Vernadsky V. On the necessity of researching radioactive minerals of the Russian Empire. In Russian /Vernadskiy V. O neobkhodimosti issledovaniya radioaktivnykh mineralov Rossiyskoy Imperii. Proceedings of the Radium Expedition of the Imperial Academy of Sciences Emperor Peter the Great Geological and Mineralogical Museum. # 1. Petrograd Imperial Academy of Sciences 1914 (2), 84 p. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbf5872fd3dff5de20.