"North Sea" 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 "North Sea".
Below are MeSH descriptors whose meaning is related to "North Sea".
Below are MeSH descriptors whose meaning is more specific than "North Sea".