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.
Despite being the capital city of China, Beijing is not the most populous city in the country. Shanghai is a more populous city than Beijing. Based on the total land area and the total population of the city, the population density of Beijing is estimated to be about 3,300 people per square mile.