Book Review: The astronomical almanac for the year 1987: the 1987 floppy almanac. / U. S. Government Printing Office, 1986.Carolyn King Roberts,Alec Boksenbergmag(1987)引用 23|浏览1暂无评分AI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要