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Enigmascientific Publishing
ebooks (also available in print form)
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Spreadbetting cover page How to trade on the financial markets and perhaps make some money! Sudoku 17 cover page How to solve a special class of sudoku puzzles: those with 17 clues, the minimum number.
World of Sudoku cover page How to solve sudoku puzzles, including idoku, samurai sudoku kakuro and killer sudoku. Measuring the World cover page Why it is time once and for all to give up on the Imperial system of units for everyday uses and fully embrace the metric system.

Website revised by John Austin, 29/01/2020. © Enigma Scientific Publishing, 2020.