by D. C. Ipsen
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Units, dimensions, and dimensionless num...
Archimedes, greatest scientist of the an...
Eye of the whirlwind: the story of John ...
Isaac Newton, reluctant genius
Rattlesnakes and scientists
The riddle of the stegosaurus
Adivina adivinador
Mister Seahorse
Butterfly and the Bog Beast
Clara Caterpillar
How to hide a butterfly & other insects
Whose Spots Are These?