Electric and hybrid electric cars have been in the news in connection with the 2011 North American International Auto Show, e.g., “Electric Cars Steal the Spotlight at Auto Show” (NPR), “Electric Cars Win Top Awards at Detroit Motor Show” (Guardian), “Electrics in the Real World” (New York Times), “How to Design Electric Cars for Safety” (Reuters), “GM Tries to Get Ahead of the Green Car Curve with Volt” (The Telegraph), and “Toyota Expands Prius Hybrid Car Brand” (BBC).
Browsing the Relative Index for “electric automobiles” yields:
Electric automobiles—engineering 629.2293
Examples of works classed in 629.2293 Electric-powered vehicles are:
• Build Your Own Electric Vehicle
• Electric Vehicle Technology Explained
• Modern Electric, Hybrid Electric, and Fuel Cell Vehicles: Fundamentals, Theory, and Design
What about works that focus on hybrid electric automobiles? Browsing for “hybrid electric” in the Relative Index yields nothing relevant; however, because the LCSH “Hybrid electric cars” has been editorially mapped, the same browse in the LCSH index of WebDewey yields:
Hybrid electric cars 629.2293
Examples of works about hybrid electric vehicles classed in 629.2293 Electric-powered vehicles are:
• Hybrid Gasoline-Electric Vehicle Development
• How Do Hybrid Cars Work?
What if a classifier has a work about a specific hybrid electric passenger automobile and browses the Relative Index for “passenger automobiles”? That yields:
Passenger automobiles—engineering 629.222
Both 629.2293 and 629.222 have 629.22 Types of vehicles in their upward hierarchy; however, the entry 629.222 Passenger automobiles has in its upward hierarchy the centered entry:
629.222–629.228 Gasoline-powered, oil-powered, man-powered vehicles
The entry 629.2293 Electric-powered vehicles has in its upward hierarchy:
629.229 Other types of vehicles
Those captions in the upward hierarchy have hierarchical force. Hybrid electric passenger automobiles are not completely gasoline powered; they fit better in a subdivision of “other types of vehicles.” An example of a work classed in 629.2293 is Prius.
Since How Do Hybrid Cars Work? and Prius are children’s books, in many libraries they will be classed in the shorter number used in the abridged edition: 629.22.
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