Xiaohong Guan Books

1970年4月26日, 北京胡同里郭家的老三出生了. 两个哥哥对老三疼爱有加, 然而, 在一次打闹中, 大哥却失手用水果刀将邻居老范的儿子大伟直接捅死, 大哥为自己的行为付出了代价. 出狱之后, 大哥接二连三的经历人生的低谷之后, 决定抛弃一切, 只身远赴草原. 二哥从最初的卖买绿豆芽到做起羊肉摊生意, 从经营服装厂到投资股票, 屡战屡败, 屡败屡战. 他对事业的执着也正如他对二小姐的心意....

Information and Communications Security

By Xiaohong Guan, Qi Li, Xiaofeng Liao, Debin Gao

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Information and Communications Security

By Xiaohong Guan, Qi Li, Xiaofeng Liao, Debin Gao

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Ke ju ting fei yu jin dai Zhongguo she hui

By Xiaohong Guan

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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.