E. T. Gjessing Books

Aquatic And Terrestrial Humic Materials

By Egil T. Gjessing, R. F. Christman, Epa, United States. Environmental Protection Agency. Office Of Drinking Water, E. T. Gjessing, Norwegian Institute For Water Research

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xi, 538 p. : 24 cm Based on papers presented at the symposium on Terrestrial and Aquatic Humic Materials in Chapel Hill, N.C., Nov. 4-5, 1981 Includes index

Organic Acids In Aquatic Ecosystems

By E. M. Perdue, William Glaze, Egil T. Gjessing, Edward, M. Perdue, Dahlem Workshop On Organic Acids In Aquatic Ecosystems (1989 Berlin, Germany), Germany) Dahlem Workshop On Organic Acids In Aquatic Ecosystems (1989 : Berlin, Perdue, Edward M, Gjessing, Egil T., 1932-, Glaze, William, E. T. Gjessing, Dahlem Workshop On Organic Acids In Aquatic Ecosystems

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Organic Acids in Aquatic Ecosystems E. M. Perdue E. T. Gjessing Editors This volume consists of background papers and reports on discussions focused on identifying major processes that cause spatia...

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.