Materia medica, 1950s-1970s, GBR/1928/NRI/NRI2/8/2/1, Box: NRI2/8/2/1/1/1-17. The Papers and Possessions of Joseph Needham, GBR/1928/NRI/NRI2. Needham Research Institute. https://archivesearch.lib.cam.ac.uk/repositories/21/archival_objects/357188 Accessed June 03, 2024.