Erratum.
In the article "Women scientists and engineers: Trends in participation," by, Betty M. Vetter (18 Dec., p. 1313), a study by C. Rose was incorrectly cited in reference 12. The correct citation is C. Rose, Academic Employment and Graduate Enrollment Pattern and Trends of Women in Science and Engineering (Final Technical Report to the National Science Foundation, Evaluation and Training Institute, Los Angeles, Calif., 1978).