Knut Bjorlykke Books

Sedimentology and Petroleum Geology

By Knut Bjorlykke

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Depositional history and geochemical composition of lower Palaeozoic epicontinental sediments from the Oslo region

By Knut Bjorlykke

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Petroleum Geoscience

By Knut Bjorlykke

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Petroleum geoscience comprises those geoscientific disciplines which are of greatest significance for the exploration and recovery of oil and gas. These include petroleum geology, of which sediment...

Petroleum Geoscience

By Knut Bjorlykke

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Sedimentologi, stratigrafi og oljegeologi

By Knut Bjorlykke

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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.