Media type: E-Article Title: John Alfred Rycroft Contributor: Rycroft, Chris; Rycroft, Hugh imprint: BMJ, 2019 Published in: BMJ Language: English DOI: 10.1136/bmj.l4882 ISSN: 0959-8138; 1756-1833 Keywords: General Earth and Planetary Sciences ; General Environmental Science Origination: Footnote: