00319nas a2200109 4500008004100000245003700041210003700078300001300115490000700128100001700135856005700152 1936 eng d00aOral Delivery in the Middle Ages0 aOral Delivery in the Middle Ages a88–1100 v111 aCrosby, Ruth uhttp://www.scripta-bulgarica.eu/bg/biblio/crosby1936