Jonathan Ashley Books

Lily & Kosmo in outer outer space

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Lily Lupino yearns to be an astronaut, so when Kosmo Kidd crash-lands in her Brooklyn kitchen in 1949, she will do almost anything to prove herself to him and his crew.

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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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