发表于2025-01-10
Sundials 2025 pdf epub mobi 电子书
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This fascinating approach to sundials offers a rigorous appraisal of the science of sundials, including mathematical treatment and pertinent astronomical background. It also provides a nontechnical treatment simple enough that several of the dials can be built by children. 106 illustrations.
Sundials 2025 pdf epub mobi 电子书