TY  - BOOK
AU  - Pius XII|John XXIII
TI  - Encyclicals and other letters of Pius XII Vol.6: Mystical Body of Christ - Mystici Corporis 1943|Promotion of biblical studies - Divino Afflante Spiritu 1943|Christian worship - Mediator Dei 1947|Holy virginity - Sacra Virginitas 1954|Priestly perfection - Sacerdotii nostri Primordia 1959 (John XXIII)
PY  - 0000///various dates
CY  - London
PB  - Catholic Truth Society, various dates .
ER  -