Gary Berntsen Books

Jawbreaker: The Attack on Bin Laden and Al Qaeda: A Personal Account by the CIA's Key Field Commander

By Gary Berntsen

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Jawbreaker

By Gary Berntsen, Ralph Pezzullo

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The Book the CIA Doesn’t Want You to ReadGary Berntsen, the CIA’s key commander coordinating the fight against the Taliban forces around Kabul, comes out from under cover for the first time to desc...

Hoog spel

By Gary Berntsen

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Een agent moet zien uit te vinden of de informatie over aanslagen die een hoge Iraanse agent heeft verschaft, op waarheid berust of dat hij te maken heeft met een gevaarlijk complot.

The Walk-In

By Gary Berntsen

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Gary Berntsen, longtime CIA operative and the field commander who cornered Osama Bin Laden in Afghanistan, writing with award-winning novelist Ralph Pezzullo, offers in this edge-of-the-seat thrill...

The walk in

By Gary Berntsen

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The walk in

By Gary Berntsen

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Jawbreaker

By Gary Berntsen

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In Jawbreaker Gary Berntsen, until recently one of the CIA’s most decorated officers, comes out from under cover for the first time to describe his no-holds-barred pursuit of Osama bin Laden and al...

Walk In

By Gary Berntsen, Ralph Pezzullo

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Human intelligence counterterrorism and national leadership

By Gary Berntsen

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The Walk-In

By Gary Berntsen, Ralph Pezzullo

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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.