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  2. List of Dewey Decimal classes - Wikipedia

    en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes

    List of Dewey Decimal classes. The Dewey Decimal Classification (DDC) is structured around ten main classes covering the entire world of knowledge; each main class is further structured into ten hierarchical divisions, each having ten divisions of increasing specificity. [1] As a system of library classification the DDC is "arranged by ...

  3. Standard Industrial Classification - Wikipedia

    en.wikipedia.org/wiki/Standard_Industrial...

    The Standard Industrial Classification (SIC) was a system for classifying industries by a four-digit code as a method of standardizing industry classification for statistical purposes across agencies. Established in the United States in 1937, it is used by government agencies to classify industry areas. Similar SIC systems are also used by ...

  4. Global Industry Classification Standard - Wikipedia

    en.wikipedia.org/wiki/Global_Industry...

    The Global Industry Classification Standard (GICS) is an industry taxonomy developed in 1999 by MSCI and Standard & Poor's (S&P) for use by the global financial community. The GICS structure consists of 11 sectors, 25 industry groups, 74 industries and 163 sub-industries [ 1 ] into which S&P has categorized all major public companies .

  5. Dewey Decimal Classification - Wikipedia

    en.wikipedia.org/wiki/Dewey_Decimal_Classification

    The Dewey Decimal Classification (DDC), colloquially known as the Dewey Decimal System, is a proprietary library classification system which allows new books to be added to a library in their appropriate location based on subject. [Note 1] It was first published in the United States by Melvil Dewey in 1876. [1]

  6. Generic Product Identifier - Wikipedia

    en.wikipedia.org/wiki/Generic_Product_Identifier

    Generic Product Identifier. The Generic Product Identifier (GPI) is a 14-character hierarchical classification system created by Wolters Kluwer's Medi-Span that identifies drugs from their primary therapeutic use down to the unique interchangeable product regardless of manufacturer or package size. The code consists of seven subsets, each ...

  7. Harmonized System - Wikipedia

    en.wikipedia.org/wiki/Harmonized_System

    The process of assigning HS codes is known as "HS Classification". All products can be classified in the HS by using the General Rules for the Interpretation of the Harmonized System ("GRI") that must be applied in strict order. HS codes can be determined by a variety of factors including a product's composition, its form and its function.

  8. NIGP Code - Wikipedia

    en.wikipedia.org/wiki/NIGP_Code

    This level contains 219 Commodity (Product) Classes and 55 Service Classes totaling 274 Classes. The 3-Digit Code is primarily used to generate periodic expenditure history by department for fiscal planning, budget execution, and accounting. 5-Digit Class-Item Code The 5-Digit class-item Code is an expanded version of the 3-Digit class Code ...

  9. WebMD's A to Z Drug Database

    www.webmd.com/drugs

    WebMD's comprehensive database of prescription drug and medication information from A to Z