Media type: E-Article Title: Dr. John Alfred Gray imprint: BMJ, 1929 Published in: BMJ Language: English DOI: 10.1136/bmj.2.3595.1034-a ISSN: 0959-8138; 1468-5833 Keywords: General Earth and Planetary Sciences ; General Environmental Science ; General Medicine ; General Medicine Origination: Footnote: Access State: Open Access