TY  - BOOK
AU  - Ross,Alf
TI  - Directives and norms
SN  - 0710036353 :
U1  - 149.9 
PY  - 1968///
CY  - London
PB  - Routledge & Kegan Paul
KW  - Semantics (Philosophy)
KW  - Logic
KW  - Law
KW  - Philosophy
N1  - Includes index
ER  -