Extensive collection of journals, academic books, and academic encyclopedias in health/life sciences, physical sciences, and social/behavioral sciences.
Words matter! As you do your research, keep a running list of possible search terms (synonyms, broader terms, narrower terms, related terms) you find. Some authors might use one term to describe a concept, while other authors might use a different term depending on the publication date or place of publication.
Examples:
Yup'ik OR Eskimo language
"Day of the Dead" OR "Dia de los Meurtos"