TY  - BOOK
AU  - Harre,R.
AU  - Madden,E.H.
TI  - Causal powers: a theory of natural necessity 
SN  - 063116040X :
U1  - 122 
PY  - 1975///
CY  - Oxford
PB  - Basil Blackwell
KW  - Hume, David,
KW  - Necessity (Philosophy)
KW  - Causation
N1  - Includes bibliographical references and index
ER  -