Donald J. Sobol Books

ENCYCLOPEDIA BROWN TAKES THE CAKE

By Ib Ohlsson, Donald J. Sobol, Glenn Andrews

Average: 0.00, 0 Ratings

Encyclopedia Brown and the case of the jumping frogs

By Donald J. Sobol

Average: 0.00, 0 Ratings

Encyclopedia Brown, boy detective extraordinaire, solves ten new cases, including "The Case of the Miracle Pill," "The Case of Nemo's Tuba," "The Case of the Lawn Mower Races," and "The Case of the...

Two-Minute Mysteries Collection

By Donald J. Sobol

Average: 0.00, 0 Ratings

Quick mysteries are presented for the reader to solve, with solutions printed upside down at end of each mystery.

Encyclopedia Brown's second record book of weird and wonderful facts

By Donald J. Sobol

Average: 0.00, 0 Ratings

Encyclopedia Brown presents another volume of lesser-known facts about sports, animals, the body, school, and other topics.

Encyclopedia Brown's record book of weird and wonderful facts

By Donald J. Sobol

Average: 0.00, 0 Ratings

Encyclopedia Brown presents a miscellany of lesser-known facts.

Encyclopedia Brown Takes the Case

By Donald J. Sobol

Average: 0.00, 0 Ratings

Encyclopedia Brown s Book of Wacky Sports

By Donald J. Sobol

Average: 0.00, 0 Ratings

Encyclopedia Brown Carries On

By Donald J. Sobol

Average: 0.00, 0 Ratings

Encyclopedia Brown's Book Of Strange But True Crimes

By Donald J. Sobol, Rose Sobol

Average: 0.00, 0 Ratings

Encyclopedia Brown Solves Them All

By Donald J. Sobol, Leonard Shortall

Average: 0.00, 0 Ratings

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.