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.
According to our just released Demographia World Urban Areas, Tokyo-Yokohama, the worldâs largest city, has 30 times the population of Beijing in 1800. And, Beijing itself has reached 21 million. Beijing remains one of the ten largest cities, but London with a population of 10 million ranks 32nd.