The 400's are for language-associated topics:
The Dewey Decimal system's 400-499 section mostly covers topics related to language. This range includes linguistics (400), English language (420), French (440), German (430), and a variety of other languages and language families. It also encompasses grammar, dictionaries, and other language resources.
dictionaries are under 400-499 of the Dewey decimal system
The Dewey Decimal System categorizes topics into 10 main classes, with class 300-399 covering the social sciences. Topics in this range include sociology (300), economics (330), political science (320), law (340), education (370), and more. This classification system is used in libraries to organize books and other resources by subject.
Arts and Recreation. More information is here: http://en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes#700_.E2.80.93_Arts_and_recreation
The Dewey Decimal System places topics related to religion in the 200s section. This includes books on Christianity, Islam, Judaism, and other world religions. Each religion is assigned a specific range of numbers within the 200s to organize related topics.
Topics in a book are listed alphabetically in the Index.
Health is typically found in the 610-619 range of the Dewey Decimal System, specifically in the 610s section. This section covers topics related to medicine, healthcare, and wellness.
The 500s section of the Dewey Decimal System is dedicated to natural sciences and mathematics. It covers topics such as astronomy, biology, physics, chemistry, mathematics, and earth sciences.
The Dewey Decimal Classification system organizes knowledge into 10 main classes. The range 000-099 covers Generalities, including topics such as encyclopedias, books about information, computer science, and the Dewey Decimal Classification itself.
Sharks would typically be classified under the Dewey Decimal System number 597.3, which covers topics related to cartilaginous fishes, including sharks, rays, and skates.
In the Dewey Decimal System, books on the human body typically fall under the 610 range (610-619). This classification includes topics related to medicine, health, anatomy, and physiology.
There are many help topics listed in the Intuit QuickBooks support section of their website. Examples of the help topics include accounting and billing, fix and error, and features.
Books about clutter or organization can typically be found in the Dewey Decimal System under the number 648.8. This section covers topics related to home management, organization, and decluttering.
present topics on power system