Barbara M. Posadas Books

America s History to 1877

By Timothy R. Mahoney, Henretta, Stephen J. Kneeshaw, Linda Moore, Barbara M. Posadas

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America A Concise History

By Timothy R. Mahoney, James A. Henretta, Stephen J. Kneeshaw, Barbara M. Posadas, Linda Gies

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Filipino Americans

By Barbara M. Posadas

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The Filipino Americans

By Barbara Mercedes Posadas

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"In the year 2000, Filipino Americans will be the largest Asian American group. This volume is the first detailed historical study of the major post-1965 immigration of Filipinos to the United Stat...

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.