Becker, Lawrence C. and Charlotte B. Becker, ed. Encyclopedia of Ethics. Garland Pub., 1992. This encyclopedia covers a wide range of ethical issues in 435 articles. The articles are shorter than those in the Encyclopedia of Applied Ethics , but there are similarly broad survey articles with briefer articles on key concepts and biographical entries, as well.
Most articles have a brief bibliography.
There is an alphabetical list of articles and a thorough index. All articles are written and signed by experts in the field. Oxford University Press, 1994. It also includes historical philosophers and scientists whose work brought about major changes in philosophical thought. The definitions contain extensive cross-references.