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Every time you click on these buttons;

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you will access the respective amazon homepages where you can buy books, videos, DVDs, CDs, computer games, electronics etc. The difference is that amazon can trace that you "clicked through" from planetqhe.com. They then award me a small referall fee if you buy anything during the visit you make after clicking through from planetqhe.com. This is a great way of helping me pay for the upkeep of this site - but it only works if you buy after clicking through from planetqhe.com.

There are also other links to amazon in this site; the recommended reading section lists some books on probability that I have enjoyed whilst writing this site, and also many of the spreadsheets have links to relevant texts as well.

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