TY  - BOOK
AU  - Hanson Norwood Russell
TI  - Observation and explanation :  A guide to philosophy of science
T2  - Essays in philosophy; Ed by Arthur C. Danto
U1  - A0R, L2;1 
PY  - 1971///
CY  - London
PB  - George Allen & Unwin Ltd    
KW  - SCIENCE
ER  -