RT Review T1 The interdict in the thirteenth century. A question of collective guilt. By Peter D. Clarke. Pp. x+300. Oxford: Oxford University Press, 2007. £65. 978 0 19 920860 9 JF The journal of ecclesiastical history VO 60 IS 2 SP 347 OP 347 A1 Sayers, Jane LA English PB Cambridge Univ. Press YR 2009 UL https://ixtheo.de/Record/1784667382 K1 Rezension DO 10.1017/S0022046908006180