Seymour P. Lachman Books

One Nation Under God

By Seymour P. Lachman, Barry Alexander Kosmin, Barry A. Kosmin

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America is one of the few countries where so many religions flourish side by side. Each religion has pockets of influence, and some hold sway over large regions - such as the Baptist church in the...

Failed State

By Seymour Lachman, Rob Polner

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Mr. New York

By Seymour Lachman

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Mr. New York

By Seymour P. Lachman, Bill Clinton

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The man who saved New York

By Seymour Lachman

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Three Men in a Room

By Seymour P. Lachman, Seymour Lachman, Robert Polner

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Three Men in a Room

By Seymour P. Lachman, Robert Polner

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Based on the most extensive survey ever conducted on religion in America, One Nation Under God delivers surprising revelations about the religious beliefs, practices, and affiliations of Americans....

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.