PubMed contains abstracts and full-text life sciences journal articles, biomedical literature, and books. Subjects covered include health, biomedicine, behavioral sciences, chemical sciences, and bioengineering.
Statista contains statistical information, data, infographics, and tables. Subjects are geared towards business and marketing statistical needs, and include consumer goods, media, politics, sports, travel, and technology.
Science Direct contains abstracts and full-text articles from scientific, technological, and medical scholarly journals and reference books. Subjects covered include biology, chemistry, computer science, economics, environmental science, mathematics, medicine, neuroscience, nursing, physics, education, and psychology. Note that Science Direct only searches Elsevier journals.
ERIC contains abstracts, citations, and some full-text of journal articles, research and technical reports, conference proceedings, teaching guides and lesson plans. ERIC covers all aspects of education.