Public Domain Mark
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Credit
Sur la matière radiante : conférence faite a Sheffield, le 22 Aout 1879, devant l'association Britannique pour l'advancement des sciences / par M. William Crookes. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.