JR's Chemistry Set
For the iPhone and iPad, JR's Chemistry Set makes chemistry interesting and fun to learn. Based upon the innovative Rota Period, it is a handy and powerful reference tool for chemistry enthusiasts and practitioners at all ages and all levels.
|Periodic Table, What is it showing?||
© Mark R. Leach 1999-
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This free, open access web book is an ongoing project and your input is appreciated.
counter started in 2011