John Herman Books

Massachusetts General Hospital Psychiatry Update and Board Preparation

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Randall

By John Herman Randall

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Shortly after turning forty, David Smith, a prosperous wine merchant happily established on Park Avenue with his wife and four children, embarks on a series of love affairs that gather in intensity...

The light of common day

By John Herman

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A story about perception and misperception, about the daily intensities of adolescence - and the daily disappointments - it is a haunting novel of a young man's first introduction to sex, love, and...

Deep waters

By John Herman

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A summer at Camp Winasaukee leaves a teenaged camper with a moral dilemma following the mysterious drowning of a camp counselor.

One Winter's Night

By John Herman

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A lonely cow about to give birth on a cold winter's night finds shelter in a deserted shed with a man and a woman who are also having a baby.

Labyrinth

By John Herman

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As he struggles to cope with his father's suicide and his mother's possible remarriage, fourteen-year-old Gregory is plagued by recurring dreams that make him question what is real.

Red White And Blue

By John Herman

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Sun, weather, and climate

By Herman John R.

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Red White and Blue

By John Herman

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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.