Cold Spring Harbor (N.Y.). Eugenics Record Office. Committee to study and to report on the best practical means of cutting off the defective germ-plasm in the American population & Laughlin, H. H. (1914). Report of the Committee to study and to report on the best practical means of cutting off the defective germ-plasm in the American population.

Cold Spring Harbor (N.Y.). Eugenics Record Office. Committee to study and to report on the best practical means of cutting off the defective germ-plasm in the American population and Harry Hamilton Laughlin. Report of the Committee to Study and to Report on the Best Practical Means of Cutting off the Defective Germ-plasm in the American Population. Cold Spring Harbor, N.Y, 1914.

Cold Spring Harbor (N.Y.). Eugenics Record Office. Committee to study and to report on the best practical means of cutting off the defective germ-plasm in the American population and Harry Hamilton Laughlin. Report of the Committee to Study and to Report on the Best Practical Means of Cutting off the Defective Germ-plasm in the American Population. 1914.