TY  - BOOK
AU  - Aquinas, Thomas
AU  - Aquinas,Thomas
TI  - Summa Theologiae Vol: 18( Principles of Morality)
U1  - E91 
PY  - 1966///
CY  - New York
PB  - Mc Graw-Hill Book Company
N1  - includes index and biblioraphy
ER  -