And then?The ten classes are divided further into ten areas like this.Let’s look at the 600 class!
600 Technology610 Medicine and Health620 Engineering and Applied Sciences630 Agriculture and related technologies640 Home and family management650 Management and auxiliary services660 Chemical Engineering670 Manufacturing680 Manufacture of products for specific uses690 Buildings
636 Animal Husbandry Class here works on species of domestic mammals. The numbers on the right side of the decimal point are used to divide a specific subject into even more specific parts of the subject. 636.1 Horses 636.2 Cattle 636.3 Sheep 636.4 Swine636.5 Poultry 636.6 Birds other 636.7 Dogs 636.8 Cats than poultry