@BOOK{NAP9562, title = "Doctorates Conferred in the Sciences by American Universities 1928-1929: Reprint & Circular Series of the National Research Council", doi = "10.17226/9562", url = "https://nap.nationalacademies.org/catalog/9562/doctorates-conferred-in-the-sciences-by-american-universities-1928-1929", year = 1929, publisher = "The National Academies Press", address = "Washington, DC" }