Organismal and population biology with emphasis on organismal diversity, structural and functional strategies of organisms, ecological and behavioral relationships, and evolutionary mechanisms.
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- Oxford Reference: Life Sciences
Collection of dictionaries and encyclopedias on animal life, biology, ecology, evolution, genetics, molecular biology, and plant sciences.
Scientific encyclopedias are secondary sources that can provide background information.
Online version of the 20-volume McGraw-Hill Encyclopedia of Science & Technology, including scientific biographies.
- Encyclopedia of Evolution
Online version of this two-volume source from Oxford University Press.
- Encyclopedia of Life Sciences (eLS)
Database of contributed entries in the biological sciences, hosted by Wiley Interscience.
- Environmental Encyclopedia
"Provides in-depth, worldwide coverage of environmental issues ... [and] current status, analysis, and suggested solutions."
- Grzimek's Animal Life Encyclopedia
Entries include evolution, physical characteristics, distribution, habitat, reproduction, behavior, feeding ecology, reproduction for animals or animal groups.