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美国政府科技报告
>Theoretical research on the periodic motion and stability of a small mass under the gravitational attraction of two heavy bodies status report no. 7, 1 sep. 1965 - 28 feb. 1966
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Theoretical research on the periodic motion and stability of a small mass under the gravitational attraction of two heavy bodies status report no. 7, 1 sep. 1965 - 28 feb. 1966