TY  - BOOK
AU  - Hursthouse, Rosalind
AU  - Richards, Janet radcliffe
AU  - Sorell, Tom
TI  - Formal logic: a workbook
SN  - 0335110193
U1  - 128  
PY  - 1980///
CY  - Milton keynes
PB  - The Open University Press
KW  - Arts
ER  -