Richard T. Ku Books

Provides a diagnostic exam so readers can determine their strengths and weaknesses, reviews major topics on the test, and includes six full-length practice exams with answers and explanations.

SAT subject test math

By Richard T. Ku

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Provides a diagnostic exam so readers can determine their strengths and weaknesses, reviews major topics on the test, and includes six full-length practice exams with answers and explanations.

TABE

By Richard T. Ku

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"Whether you're looking to quality for a government job, to launch a career with a private company, or to demonstrate your abilities for school placement, a high score on the Test of Adult Basic Ed...

Barron s SAT subject test

By Richard T. Ku

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Provides a diagnostic exam so readers can determine their strengths and weaknesses, reviews major topics on the test, and includes 7 full-length practice exams with answers and explanations.

Barrons Sat Subject Test

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.