Irwin T. Sanders, Walter C. Bisselle, Roger Whitaker, East European Peasantries. Social Relations. An Annotated Bibliography of Periodical Articles. Boston: G. K. Hall, Vol 1 (1976), vi, 179 p., Vol 2 (1981), ix, 200 p. Alexandra Filippenko, compiler, Guide to the Nikić Collection. Balkan Historical Sources. Santa Barbara, California: University of California Library, 1980, 416 p.