Humans were present in North America 10,000 years earlier than previously thought, according to a new study. Researchers from the University of Arizona have analysed fossilised footprints found at ...
1. Introduction to mussels and mussel ecology -- 2. Catching the mussel bug : a history of the study of mussel ecology in North America -- 3. Diversity and biogeography -- 4. Aquatic habitats and ...
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