John Schulz Books

The Financial Crisis of Abolition

By John Schulz

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O Exercito na politica

By John Schulz

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"As a group, the military in the 1870s-80s was alienated from traditional elites by the corruption of the Paraguayan War and by slave-catching demands. But the military's political efforts after 18...

A crise financeira da abolicao, 1875-1901

By John Schulz

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"The end of slavery opened modernization opportunities for Brazil, opportunities squandered in the short run by the irresponsible activities and policies of the government. The Encilhamento was not...

Financial Crisis of Abolition

By John Schulz

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Please don t do that

By John Schulz

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Financial Crisis of Abolition

By John Schulz

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Nail of Iron

By John Schulz

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Guardians of Oak

By John Schulz

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Guardians of Oak

By John Schulz

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Mourning Dove Zenaida Macroura Harvest and Population Parameters Derived from a National Banding Study

By David Otis, U. S. Interior, Fish And Service, John Schulz, David Scott

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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.