Yongfu Sang Books

Yi cheng yue qian nian

By Xiaoyu Nie, Yongfu Sang

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Han Wei Luoyang gu cheng yan jiu zha ji

By Yongfu Sang

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本书共八章,内容包括:残垣断壁后的锦绣帝都,仰望星空,九天禅韵,驼铃悠扬满洛城,近现代洛阳历史的缩影等.

Han Wei Luoyang gu cheng bian nian shi

By Yongfu Sang

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汉魏洛阳故城遗址始建于西周初年,废弃于唐初,东汉,曹魏,西晋,北魏等朝代都城的遗址,都城历史长达330多年.该书以编年史的形式介绍了洛阳故城的起源,发展,高潮,衰落,灭亡全过程.

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.