Janice VanCleave?s A+ Projects in Astronomy
Автор:
Janice VanCleave, 224 стр., ISBN:
9780471328209
An all–new collection of first–rate science experiments! Are you having a hard time coming up with a good idea for the science fair? Do you want to earn extra credit in your science class? Or do you just want to learn more about how the universe really
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