00308nam a2200109 4500008004100000245002800041210002800069260002200097490000600119100001500125856005800140 1980 eng d00aClavis patrum graecorum0 aClavis patrum graecorum aTurnhoutbBrepols0 v41 aGeerard, M uhttp://www.scripta-bulgarica.eu/en/biblio/geerard1980