Kiser, Clyde V. 1904- Group differences in urban fertility, : a study derived from the national health survey, [electronic resource] / by Clyde V. Kiser .... — Baltimore, : The Williams & Wilkins company,, 1942.. — xii, 284 p. : ill.
"The basis for the present monograph ... is the ... data collected by the national health survey, an investigation conducted by the United States Public health service in 1935-1936." - p. vi.