Contents: Facsims of eds. published as The data of ethics, Part 1 of the Principles of ethics. London : Williams and Norgate, 1879; Justice, being Part IV of the Principles of ethics. London : Williams and Norgate, 1891.
The data of ethics ; Justice by Herbert Spencer. ISBN 0415122112. Published by Routledge/Thoemmes in 1996. Publication and catalogue information, links to buy online and reader comments.