Programs and instructions for observing and collecting collections in geology, soil science, botany, zoology, etc.: (comp. On be...

Programs and instructions for observing and collecting collections in geology, soil science, botany, zoology, etc.: (comp. On behalf of the village of Peterb.- St. Petersburg.: Oil of Naturalists, 1891. -3rd ed..additional.and bro.605: Territory..Source of an electronic copy: Russian Geographical Society