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At once feared and revered, sharks have captivated people since our earliest human encounters. Children and adults alike stand awed before aquarium shark tanks, fascinated ...
Here's the perfect self-teaching guide to help anyone master differential equations, a common stumbling block for students looking to progress to advanced topics in ...
This tour of the universe takes in 100 sights. The authors explain each one, what it is, and how it fits into the astronomical zoo ...