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.
See also reference (FX) in Slovak
zachovanie prírodných zdrojov
See also reference (FX) in English
Conservation of Natural Resources
Links
(1) - MeSH descriptor
subject heading
openseadragon
Number of the records: 1
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