Daniel Lipkowitz Books

After their Kingdom is taken over by the Dark Knight Vladek, a band of heroic Knights are forced to travel on a dangerous quest to find the Heart of the mythical Shield of Ages-the one thing that c...

Knights' Kingdom Reader

By Daniel Lipkowitz

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Four brave LEGO knights must capture the Dark Fortress of Ankoria in order to save Morcia from Lord Vladek.

LEGO Knights Kingdom

By Daniel Lipkowitz

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Capture the fortress, save the kingdom; Sir Jayko, Sir Danju, Sir Rascus, and Sir Santis must stop Lord Vladek's evil plan. With powerful new armor, swords, and shields, the four heroes travel to t...

Standing small

By Nevin Martell

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Photographs and brief text chronicle thirty years of LEGO figures, featuring designs modeled after motion picture and animated characters, along with pirates, Vikings, athletes, and more.

The LEGO book

By Danie Lipkowitz

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An illustrated history of the LEGO products that discusses the origins of the company, and the evolution of bricks, figures, play themes, and related products; and features a time line that records...

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.