Robert L. Peiffer Books

Comparative ophthalmic pathology

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Ocular tumors in animals and humans

By Kenneth B. Simons, Robert L. Peiffer

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This new edition retains the successful problem-oriented approach and full color text of the previous edition, along with wide coverage of all aspects of small animal ophthalmology and more than 15...

Ocular Tumors in Animals and Humans

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Oftalmologia de Pequenos Animales

By Robert L. Peiffer

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Ocular Tumors in Animals and Humans

By Kenneth B. Simons, Peiffer Robert L. Jr., Robert L. Peiffer

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Small Animal Ophthalmology

By Robert L. Peiffer

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Small animal ophthalmology

By Robert L. Peiffer

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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.