Martha T. Ottersley Books

Kermit's costume caper

Average: 0.00, 0 Ratings

The Muppets are having a costume party! Of course, each one tries to outdo the others with the 'pun'niest costume. Lift the flaps to discover what Kermit, Miss Piggy, Fozzie, and Gonzo wear to the...

The Muppets For the Love of Piggy

By Martha T. Ottersley

Average: 0.00, 0 Ratings

The twelve days of a Muppet Christmas and a chicken in a pine tree

By Martha T. Ottersley

Average: 0.00, 0 Ratings

"Get into the holiday spirit with the Muppets as they count down to Christmas with friends-a-singing, fruitcakes flying, pine trees running amok, and ... a chicken in a pine tree! This Muppet twist...

Easter eggstravaganza

By Martha T. Ottersley

Average: 0.00, 0 Ratings

The Muppets wake up to big Easter surprises! Magical eggs are hidden everywhere in the Muppet Theater! Read all the riddles and help the Muppets guess what is inside their Easter eggs before findin...

Green and Bear It

By Martha T. Ottersley, Amy Mebberson

Average: 0.00, 0 Ratings

Dora and the Winter Games

By Martha T. Ottersley

Average: 0.00, 0 Ratings

Dora needs to skate, ski and sled to fix the Ice Bridge at the Winter Games.

Muppets Wocka Wocka Fozzie s Funny Business

By Martha T. Ottersley

Average: 0.00, 0 Ratings

Guess who loves Christmas

By Martha T. Ottersley

Average: 0.00, 0 Ratings

Dora goes backstage before the Christmas pageant to introduce her animal friends, who are already wearing their costumes for their parts in the show.

Dora and the Winter Games

By Martha T. Ottersley

Average: 0.00, 0 Ratings

Dora needs to skate, ski and sled to fix the Ice Bridge at the Winter Games.

Dora et les jeux d hiver

By Martha T. Ottersley

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.