<P> Corpus Juris Canonici </P> <Ul> <Li> Decretist </Li> <Li> Regulæ Juris </Li> <Li> Decretals of Gregory IX <Ul> <Li> Decretalist </Li> </Ul> </Li> <Li> Decretum Gratiani </Li> <Li> Extravagantes </Li> <Li> Liber Septimus </Li> </Ul> <Li> Decretals of Gregory IX <Ul> <Li> Decretalist </Li> </Ul> </Li> <Ul> <Li> Decretalist </Li> </Ul>

When did reconciliation start in the catholic church