The law is treated in a number of articles. For a description of legal training and a general background, see legal profession, legal education, and legal ethics. Articles that delineate the relationship of law to political structures are constitution; ideology; political party; and political system. For articles that discuss the importance of law regarding social justice and other social issues, see human rights; land reform; and social service. For an examination of comparative legal systems and the relationship of the law to the social sciences, see comparative law. For a description of canon law, see canon law.