Ralph Warner Books

Save your small business

By Ralph E. Warner

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101 law forms for personal use

By Ralph E. Warner

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Everybody s guide to small claims court

By Ralph E. Warner

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Presents resources and step-by-step instructions for defending one's case in small claims court, and discusses specific kinds of cases, such as motor vehicle repair and purchase, vehicle accident,...

How to buy a house in California

By Ralph E. Warner

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"Presents a expert tips, useful forms, and checklists for people buying a house in California. The new edition emphasizes that careful research is necessary before deciding what price and terms to...

How to buy a house in California

By Ralph Warner

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How to buy a house in California

By Ralph Warner

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The California landlord s law book

By David Wayne Brown

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Leases rental agreements

By Marcia Stewart

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Discusses preparing a lease or rental agreement, choosing tenants, getting the tenants moved in, and changing or ending a tenancy.

Every landlord s legal guide

By Marcia Stewart

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Everybody s guide to small claims court in California

By Ralph Warner

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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.