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International Halley Watch Amateur Observers' Manual for Scientific Comet Studies - Part 1
Stephen J. EdbergUnited States. National Aeronautics and Space Administration
其他書名
Methods
出版Jet Propulsion Laboratory, California Institute of Technology, 1983
URLhttp://books.google.com.hk/books?id=oXLkoAEACAAJ&hl=&source=gbs_api