TY  - BOOK
AU  - Hazlitt,William
AU  - Hazlitt,William
TI  - Essays on the principles of human action: on the systems of hartley and helvetius and on abstract edeas 
PY  - 1840///
CY  - London
PB  - John Miller
KW  - Hartley, David,
KW  - Helvetius, Claude Adrien,
KW  - Philosophy
ER  -