Anthropological Index OnlineThe Anthropological Index Online (AIO) is published by the Royal Anthropological Institute (RAI) in cooperation with Anthropology Library and Research Centre at the British Museum. The index includes about 4,000 periodical titles (1,500 current) covering all branches and areas of anthropology. Nearly 800 journals, published in more than 40 languages, are indexed on a continuing basis. Records cover 1957 to the present.