Dewey Decimal Classification - Children's Encyclopedia (Ages 8-11) The Dewey Decimal Classification (DDC) is a system for organizing the contents of a library. It is commonly known as the Dewey Decimal System. It helps people find nonfiction books on any subject in the library.
Top 10 Largest Cities in China. According to the related data and statistics of the 6th nationwide population census, the following cities are the Top 10 largest cities in China by urban resident population (exclude suburban, county and county-level city) in China. No. 1 Shanghai.
The most populated city in the world is Tokyo Japan with over 30million. Shanghai has a population of over 20 million. Approximately 17 million permanent residents and more than 3 million temporary residents. Beijing is the second most populous city in China. Wikipedia lists (density by people per sq. km): 1. Shanghai 2.