Michael M. Sokal Books

An Education in Psychology: James McKeen Cattell's Journal and Letters from Germany and England, 1880-1888

By Michael M. Sokal, Cattell James McKeen

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The establishment of science in America

By Sally Gregory Kohlstedt

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"This comprehensive history of the American Association for the Advancement of Science (AAAS), the largest and most significant general organization of scientists in America, provides a unique wind...

Psychological Testing and American Society

By Michael M. Sokal

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Psychological testing and American society, 1890-1930

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The volume focuses on the programs, ideas, and practices of the early twentieth century's most influential testers.

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.