Joseph Rosenbloom Books

Monster madness

By Joseph Rosenbloom

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A collection of riddles, jokes, and tongue twisters about monsters.

Mad scientist

By Joseph Rosenbloom

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A collection of riddles, jokes, and tongue twisters featuring scientists, doctors, robots, computers, space creatures, and other scientific and science fiction phenomena.

Mad scientist

By Joseph Rosenbloom

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A collection of riddles, jokes, and tongue twisters featuring scientists, doctors, robots, computers, space creatures, and other scientific and science fiction phenomena.

Get well quick!

By Joseph Rosenbloom

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Hundreds of riddles and jokes about getting sick and getting well.

Get well quick!

By Joseph Rosenbloom

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Hundreds of riddles and jokes about getting sick and getting well.

Giggles, gags & groaners

By Joseph Rosenbloom

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A collection of the best, worst, and silliest riddles, jokes, and rhymes.

Giggles, gags & groaners

By Joseph Rosenbloom

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A collection of the best, worst, and silliest riddles, jokes, and rhymes.

The world's best funny rhymes

By Joseph Rosenbloom

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Contains more than 200 short, humorous poems from anonymous sources.

Tricky tongue-twisters

By Joseph Rosenbloom

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An illustrated introduction to tongue twisters, both familiar and new, grouped by the letter of the alphabet featured in each.

The Little Giant Book of School Jokes

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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.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.