The "Information Plus Reference Series compiles all the pertinent data, both current and historical, on a wide variety of contemporary social issues. Designed as ready-reference tools providing key data on social concerns, these books save researchers and students from the cumbersome task of locating the various data in pamphlets, legal journals, congressional reports, newspapers and other sources. The series covers 38 vital current issues, from abortion to national security. Volumes are completely revised and updated every two years.