"Natural Springs" 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.
Water that emerges to the surface of the earth from underground.
This graph shows the total number of publications written about "Natural Springs" by people in this website by year, and whether "Natural Springs" was a major or minor topic of these publications.
To see the data from this visualization as text, click here.