Ripken Cal Jr Books

Squeeze play

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Centerfielder Corey Maduro has to deal with the humiliation of having an overly involved and short-tempered father in the stands. Centerfielder Corey Maduro has to deal with the humiliation of hav...

Wild pitch

By Ripken Cal Jr

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"Robbie Hammond is the hardest throwing pitcher in the Babe Ruth League. But what good is all that heat when he can't seem to find the plate? With Robbie struggling, the Dulany Orioles are sufferin...

Super slugger

By Ripken Cal Jr

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Thirteen-year-old Cody Parker moves to Baltimore, Maryland, where as a fat eighth-grader, he has to deal with brutal teasing from a baseball teammate, and his school is beset by a rash of mysteriou...

Super slugger

By Ripken Cal Jr

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Squeeze play

By Ripken Cal Jr

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Corey Maduro and his team, the Orioles, are going to the Grand Slam Tournament, but Corey's in a hitting slump, is being hassled by Katelyn Morris, and is embarrassed by his dad's temper at his games.

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.