Chengjun Ma Books

Min zu xiao dao

By Chengjun Ma, Wei Ma

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本书收集上百年来研究撒拉族的数百篇学术论文研究内容涉及撒拉族民族学人类学历史学宗教学经济学社会学语言学民俗学文艺学等各个方面.

Xunhua Xian she hui jing ji ke chi xu fa zhan yan jiu

By Chengjun Ma

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Bai nian Sala zu yan jiu wen ji

By Chengjun Ma, Wei Ma

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Zhongguo min zu di qu jing ji she hui diao cha bao gao

By Chengjun Ma

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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.