Findings:

• Lipid classification
• Saint-Emilion Classification
• US Fencing Classification System
• Classification of chemical reactions
• UK drug classification
• Vallee Classification System
• Classification of Neurons
• United States mail classifications
• Global Industry Classification Standard
• The Faceted Television Episode Guide-O-Matic Classification Scheme
• Koppen climate classification system
• Airspace classifications
• Universal Decimal Classification
• IUGS classification of plutonic igneous rocks
• Finnish Board of Film Classification
• Physics and Astronomy Classification Scheme
• Classification of dinosaurs
• Pennsylvania Railroad locomotive classification
• rocket motor classification
• Standard Occupational Classification
• Soil classification
• Ski trail difficulty classifications
• Australian film and literature classification system
• Hazard Classification Code
• Australian Standard Geographical Classification Main Structure
• Bordeaux wine classification
• Power Classification
• Classification of Saints
• classification theorem of finite simple groups
• Biological system of classification
• Hynek Classification System
• Classification of Bones
• Dewey Decimal Classification and Relative Index
• Library of Congress Classification System
• classification system
• Yerkes Spectral Classification
• Classification and Regression Trees
• Classification
• Poetry Break between Drug Classifications
• Paradoxes in Classification Systems
• Harvard classification system
• protein classification
• ACM Classification Scheme
• Using Asteroids to explain the topological classification of 2-manifolds
• Draft Board Classifications
• Classification and Rating Administration
• Classification of Car Fish Emblems
• Rain Classifications
• General Classification
• Hubble classification system
• Yerkes classification system

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