From the Law Librarian Blog:
ABA Launches Law Reviews, Law Journals and Document Repositories Search Engine:
“The ABA’s Legal Technology Resource Center has launched a free search engine for researching the free full-text of over 300 online law reviews and law journals, as well as document repositories …” (link to full LLB post)
Note: As the ABA’s Legal Technology Resource Center says, “…Coverage may vary; for more complete coverage visit your local law library and fee-based online legal research services. Also see our list of reviews/journals/document repositories which have free full-text available online, but which must be searched/browsed manually….”