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Subject
- Biography[remove]28
- Engineers7
- Hydraulic engineers6
- Aeronautical engineers4
- History4
- Chemical engineers3
- Civil engineers3
- Mao, Yisheng, 1896-3
- Tsien, Hsue Shen3
- Addresses, essays, lectures2
- Railroad engineers2
- Scientists2
- Zhan, Tianyou, 1861-19192
- Bridges1
- Chen, Huang, 1638-16891
- Chief executive officers1
- Computer engineers1
- Dams1
- Description1
- Dong, Wenqi, 1901-1