Searching in a library catalog requires looking for broader topics such as methane climate change rather than the more specific agricultural methane emission mitigation.
LIBRARY OF CONGRESS CLASSIFICATION OUTLINE
CLASS Q - SCIENCE
QC subclass Physics
QC851-999 Meteorology. Climatology. Including the earth's atmosphere
QC974.5-976 Meteorological optics
QC980-999 Climatology and weather
QC994.95-999. Weather forecasting
CLASS T - TECHNOLOGY
TD subclass Environmental Technology. Sanitary Engineering
TD881-885 Air Quality. Air Pollution
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