The format of this work is like that of a textboook with long scholarly essays covering the entire field of archaelogy. An alphabetically arranged name and subject index at the end of the volume provides access to individual items within the text. Strayer, Joseph R., gen. Dictionary of the Middle Ages . A major reference source in this area.
Bibliographies are mostly in English.
Edited by James Graham-Campbell. The Times Atlas of European History . Times Books, 1998. An excellent general atlas of European history with several sections devoted to the Middle Ages. The Penguin historical atlas of the Vikings.