Citations
Envelope containing a photograph bequeathed by J. D. Bernal, showing composting in China, 1950 - 1975, GBR/1928/NRI/SCC2/332/3/9. Needham Research Institute. |
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Envelope containing a photograph bequeathed by J. D. Bernal, showing composting in China, 1950 - 1975, GBR/1928/NRI/SCC2/332/3/9. Needham Research Institute. https://archivesearch.lib.cam.ac.uk/repositories/21/archival_objects/351266 Accessed September 16, 2024. |