Evolutionary Anthropology: Getting Started

A huge database of scholarly literature across the sciences, strong in both historical and current coverage. Includes extensive citation mapping.

Another broad literature database with strengths in current scientific publications and citation mapping.

A large database of biomedical and related literature. It's strengths are controlled subject searching and linking with other NCBI resources.

Covers the biosciences literature, features taxonomic searching and other biological descriptors.

Covers animal biology literature, features taxonomic searching and good historical coverage.