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Terry0051 at en.wikipedia , the copyright holder of this work, hereby publishes it under the following license:

This file is licensed under the Creative Commons Attribution 3.0 Unported license.

Attribution: Terry0051 at en.wikipedia

You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

https://creativecommons.org/licenses/by/3.0 CC BY 3.0 Creative Commons Attribution 3.0 true true

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Country of origin:

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office ) before January 1, 1929. Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. Note: This tag should not be used for sound recordings. PD-1923 Public domain in the United States //commons.wikimedia.org/wiki/File:09a-2moonperts.jpg

Some other countries: The author died more than 50 years ago. It is thus out of copyright in Hong Kong and some other places.

Original upload log

• 2009-10-12 14:52 Terry0051 2385×929× (100027 bytes) Illustration of solar perturbations on the Moon in 2 positions of its orbit around the Earth (own work; part of it adapted from a diagram in F R Moulton (1914) "Instroduction to Celstial Mechanics", which is a work too old to be in copyright). Category: g