Diccionarios y enciclopedias de Biología
- Animal Diversity Web / Museum of Zoology, Univ. Michigan
- Atlas of Palaeovegetation since the last Glacial / Jonathan Adams, Oak Ridge National Laboratory
- Birdcare Encyclopaedia / Peter Weaber
- Botanical Glossary
- Cognitive Science Dictionary / Univ. Alberta, Canada
- Cytokines Online Pathfinder Encyclopedia / H. Ibelgaufts, DE.
- Enciclopedia virtual de los vertebrados españoles / Alfredo Salvador, Luis M. Carrascal
- Glossary of Biological Terms / Pearson
- Glossary of Botanical Terms / Gardenlife
- Glossary of Molecular Biology Terminology / Kenneth Kaushansky. 1999
- Glossary of Phylogenetic Systematics / Günter Bechly
- Glossary of Soil Science Terms / Soil Science Society of America
- Index Nominum Genericom / International Association for Plant Taxonomy, Smithsonian Institution Life Science Dictionary
- Nobel Prize Internet Archive
- Spring Flowering Records / Smithsonian National Museum of Natural History
- UCMP Glossary, multi-volume, multimedia virtual glossary of biological terms
- Whole Brain Atlas/ BWH, Harvard Medical School.