Welcome to the 1520 Perfect Dictionary
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| Nuclear isomer | |
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| NUCLEAR ISOMER Definition: One of a group of nuclides exhibiting the same atomic and mass numbers but differing in energy content and half-life. ___________________________________ See perfect unit (1). See perfect nuclide. See perfect group (1). ___ See perfect characteristic (1). See perfect sameness. See perfect particularity (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 |