TY  - BOOK
AU  - Hilpinen, Risto [ed.]
TI  - Deontic logic: introductory and systematic readings
SN  - 9027713022
U1  - 160 
PY  - 1971///
CY  - Boston
PB  - D. Reidel Publishing Co.
KW  - Deontic logic -- Adress, essays, lectures
ER  -