Bob Olsen Books

Cosmos
The Best of Amazing Stories The 1929 Anthology Amazing Stories Classics
Conquest of the Planets The Man Who Annexed the Moon
Ant with the Human Soul The Night of the Trolls
Rhythm Rides the Rocket
Rhythm Rides the Rocket

By Bob Olsen

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Perfect Planet and Other Stories

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If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

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