Cornelius E. Tierney Books

Federal Government Auditing

By Jeffrey W. Green, Cornelius E. Tierney, Edward F. Kearney, Roldan Fernandez

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OMB Circular A 123 and Sarbanes Oxley

By Jeffrey W. Green, Cornelius E. Tierney, Edward F. Kearney, Roldan Fernandez, Michael J. Ramos

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Federal Accounting Handbook

By Jeffrey W. Green, Cornelius E. Tierney, Kearney Company, Edward F. Kearney, Roldan Fernandez

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Federal Accounting Handbook

By Cornelius E. Tierney

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"For the first time in decades, federal accounting practices have been altered by significant changes imposed by Congress and regulatory agencies, as well as by the establishment in 1990 of the Fed...

Federal Accounting Handbook

By Jeffrey W. Green, Cornelius E. Tierney, Edward F. Kearney, Roldan Fernandez

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OMB Circular a 123 and Sarbanes Oxley

By Michael Ramos, Jeffrey W. Green, Cornelius E. Tierney, Edward F. Kearney, Roldan Fernandez

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Governmental Accounting Procedures Practices

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Government Auditing: Standards and Practices

By Cornelius Tierney, Cornelius E Tierney

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Public Sector Auditing: Federal, State & Local Government Units

By Cornelius E. Tierney

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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.