TY  - BOOK
AU  - John XXIII
TI  - Mater et Magistra: : an encyclical letter
PY  - 1962///
CY  - Chicago
PB  - Discoverers Press
KW  - Church & social problems
KW  - Catholic Church
KW  - Papal documents
KW  - John XXIII
KW  - Encyclical "Mater et Magistra"
ER  -