"Russia (Pre-1917)" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.
Below are MeSH descriptors whose meaning is more general than "Russia (Pre-1917)".
Below are MeSH descriptors whose meaning is related to "Russia (Pre-1917)".
Below are MeSH descriptors whose meaning is more specific than "Russia (Pre-1917)".