Changxian Li Books

Wu dai liang Song shi qi zheng zhi zhi du yan jiu

By Changxian Li

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Sima Guang ping zhuan Zhongguo si xiang jia ping zhuan cong shu

By Changxian Li

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Jin dai xing zheng qu hua shi

By Changxian Li

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金代行政区划史是一个具有相当难度的研究课题.本书在前人的基础上,极大地拓宽了这一课题研究的深度和广度.比如对金初疆域和政区的形成,金初特殊政区,即伪齐乃至伪楚的疆界,金初行政区划的形成与辽,宋的关系,本书都作了探讨.又如对金代路州县等行政区划的研究,以往都集中在相对成型和稳定的中期,而本书第二编以皇统二年,正隆二年,大定二十九年,泰和八年四个断面为基点,重点研究金代政区的分合沿革过程.

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.