HLAS is a searchable online bibliographic database and links researchers to scholarly descriptions of books, journal articles, book chapters, conference papers, maps and atlases, and electronic resources published from the 1960s to the present. HLAS offers multiple search options and limits, and easy options for citing, saving, and emailing search results. HLAS Online tool links researchers to descriptions of materials published and also provides online access to full-text bibliographic essays written by scholars. HLAS has some resources on primary health care.