Ronald Koertge Books

The Arizona kid

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Sixteen-year-old Billy spends the summer with his gay uncle in Tucson and works at a racetrack where he falls in love with an outspoken horse exerciser named Cara Mae.

Mariposa blues

By Ronald Koertge

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Returning to California for the summer to help train and race thoroughbreds, thirteen-year-old Graham tries to cope with the changes in his relationships with his dad and best friend Leslie and bec...

The Harmony Arms

By Ronald Koertge

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Fifteen-year-old Gabriel is continually embarrassed by his teacher/writer father, but when he goes to live with him in Los Angeles in an apartment complex full of unusual characters, Gabriel gains...

Boy girl boy

By Ronald Koertge

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Three troubled high school seniors, who plan to run away together from Illinois to California after graduation, try to figure out who they are who they want to be.

Boy Girl Boy

By Ronald Koertge

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Three troubled high school seniors, who plan to run away together from Illinois to California after graduation, try to figure out who they are who they want to be.

Where the kissing never stops

By Ronald Koertge

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The Arizona kid

By Ronald Koertge

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Where the kissing never stops

By Ronald Koertge

Average: 0.00, 0 Ratings

The Arizona kid

By Ronald Koertge

Average: 0.00, 0 Ratings

Sixteen-year-old Billy spends the summer with his gay uncle in Tucson and works at a racetrack where he falls in love with an outspoken horse exerciser named Cara Mae.

The Boy in the Moon

By Ronald Koertge

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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.