Ruth S. Hummel Books

Where Do Babies Come From?

By Ruth S. Hummel, Ruth Hummel, Hummel Ruth

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Sex instruction for primary school age children, presented from a Christian point of view.

Where Do Babies Come From? - Learning About Sex

By Ruth S. Hummel, Ruth Hummel

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Sex instruction for primary school age children, presented from a Christian point of view.

I wonder why

By Ruth S. Hummel

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Sex instruction for primary school age children, presented from a Christian point of view.

Where do babies come from?

By Ruth S. Hummel, Bergius C. C.

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Sex instruction for primary school age children, presented from a Christian point of view.

Where do babies come from

By Ruth S. Hummel

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Sex instruction for primary school age boys, presented from a Christian point of view.

Where do babies come from

By Ruth S. Hummel

Average: 0.00, 0 Ratings

Sex instruction for primary school age girls, presented from a Christian point of view. -- Source other than Library of Congress.

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.