Welcome to the 1520 Perfect Dictionary
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| Isotone | |
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| ISOTONE Definition: One of a number of nuclides having the same number of neutrons in the nucleus with differing numbers of protons. ____________________________________ See perfect nuclide. See perfect group (1). See perfect single (9). See perfect member (1). See perfect specificity. ____ See perfect particularity (1). See perfect characteristic (1). | |
1520 Products |
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1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way. |
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 1520 Sex Game |
 1520 Puzzles |
 1520 Marriage Game |