Category:Natural environment

Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.
Library cataloging
and classification
main topicnatural environment
Dewey Decimal354
Library of CongressGE
Universal Decimal502/504

Note: Works about the environment are found in Category:Environmental mass media.