Citations
'A ball-valve type due to ''Mr Wang'' (Wang Phu). no text explanation of the wheel. clepsydra. Liu Ching Thu (Sung edn.) from microfilm in CUL. Peking [rare bks]' , c.1950-1970, GBR/1928/NRI/NRI2/10/4/2/3/44. Needham Research Institute. |
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'A ball-valve type due to ''Mr Wang'' (Wang Phu). no text explanation of the wheel. clepsydra. Liu Ching Thu (Sung edn.) from microfilm in CUL. Peking [rare bks]' , c.1950-1970, GBR/1928/NRI/NRI2/10/4/2/3/44. Needham Research Institute. https://archivesearch.lib.cam.ac.uk/repositories/21/archival_objects/381688 Accessed May 13, 2024. |