References

Bibliography

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* Needham, Joseph (1986). Science and Civilization in China: Volume 4, Chemistry and Chemical Technology, Part 2, Mechanical Engineering. Taipei: Caves Books Ltd.
* Sclater, Neil. (2011). "Chain and belt devices and mechanisms." Mechanisms and Mechanical Devices Sourcebook. 5th ed. New York: McGraw Hill. pp. 262-277. . Drawings and

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