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Based on user feedback, we have made a modification to ad expiration, reducing it from 90 days to 30 days.
To reduce the influx of spam emails, we have introduced more rigorous moderation measures, aiming to enhance users' overall experience.
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$5 · Recent Like-New Softcover Technical Book
- AuthorRich Cochrane
- ISBNISBN: 978-1-77085-808-4
• "The Secret Life of Equations: The 50 greatest equations and how they work", by R. Cochrane • only read once, by me • Firefly Books Ltd., 2016, 192 pages • text and many color illustrations covering geometry, science, technology, chance and math - see pic of contents • $14 + tax new (nearly $16) yours for $5 john.gruber@sympatico.ca, 613-824-6539
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