1. Department of Health and Social Security Report on Health and Social Subjects, number 1,1972
2. Department of Health and Social Security Report on Health and Social Subjects, number 11,1975
3. Department of Health and Social Security Report on Health and Social Subjects, number 14,1979
4. Department of Health and Social Security Report on Health and Social Subjects, number 34,1989
5. Department of Health and Social Security Report on Health and Social Subjects;Department of Health Welsh Office,1991