TY  - BOOK
AU  - Spencer, Herbert
AU  - Machan, Tibor R., introducer
AU  - Machan, Tibor R., introducer
TI  - The Principles of Ethics, vol 1
SN  - 0-913966-77-0
U1  - 170/SPE/P 
KW  - Ethics
KW  - Ethics - evolutionary, data, inductions of, individual life
N1  - 3110; Ethics
ER  -