Robert Friis Books

Essentials of environmental health

Average: 0.00, 0 Ratings

Clear and comprehensive study of the major topics of environmental health including: background on the field and "tools of the trade" (environmental epidemiology, environmental toxicology, and envi...

Epidemiology for Public Health Practice

By Robert H. Friis, Robert H. Ph.D. Friis

Average: 0.00, 0 Ratings

Stress and physical health, a bibliography

By Robert Friis

Average: 0.00, 0 Ratings

Stress and mental health

By Robert Friis

Average: 0.00, 0 Ratings

Stress and Substance Abuse

By Robert Friis

Average: 0.00, 0 Ratings

Stress Cancer

By Robert Friis, Gail A. Taff

Average: 0.00, 0 Ratings

Essentials of Environmental Health 2nd Edition Essential Public Health

Average: 0.00, 0 Ratings

Navigate Epidemiology 101

By Robert Friis

Average: 0.00, 0 Ratings

Epidemiology For Public Health Practice

Average: 0.00, 0 Ratings

Epidemiology for Public Health Practice

By Robert H. Friis, Thomas Sellers

Average: 0.00, 0 Ratings

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.