%0 Journal Article %T Shades of Difference: Theoretical Underpinnings of the Medical Controversy on Black/White Differences in the United States, 1830–1870 %A Krieger, Nancy %J International Journal of Health Services %V 17 %N 2 %P 259-278 %@ 0020-7314 %D 1987-04-01 %I SAGE Publications %~ DeepDyve