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2013: Beyond Armageddon
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Effective Project Management: Traditional, Agile, Extreme, 7th ...
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Data Action: Using Data for Public Good
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Dead Reckoning: Calculating Without Instruments
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More Rapid Math: Tricks and Tips: 30 Days to Number Mastery
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Rapid Math: Tricks and Tips: 30 Days to Number Mastery
Short-Cut Math
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How to Calculate Quickly: Full Course in Speed Arithmetic
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Speed Mathematics Simplified
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The Trachtenberg Speed System of Basic Mathematics
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