Atla indexes the core secondary literature in biblical and theological studies, church history, religious ethics, and world religions. It's the best place to start for most undergraduate assignments.
Goes deeper than ATLA into OT-related books, essays and articles but with some duplication. Good also for literature on antiquities, archaeology, biblical theology, and philology.
Important multi-lingual international index of theological literature in 673 journals with considerable representation of European journal sources. All abstracts are in English.
