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Source: Kim, Sangbae. "Sangbae Kim: Inspired by Nature." 14 August 2013. Online video clip. MITvideo.
American Society of Mechanical Engineers (ASME)
ASME Engineering News Topics
Knovel Unit Converter
National Aeronautics and Space Administration (NASA)
National Science Foundation (NSF)
Thomas Register of American Manufacturers
U.S. Patent and Trademark Office
Source: Hartness Library. "Credible Websites?" 22 June 2012. Online video clip. YouTube.