"Natural Resources" 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.
Materials or substances such as land, timber, fresh water, fossil fuels, or mineral deposits that occur in a natural state and have economic value or usefulness to humans.
This graph shows the total number of publications written about "Natural Resources" by people in this website by year, and whether "Natural Resources" was a major or minor topic of these publications.
To see the data from this visualization as text, click here.