Physics and Astronomy Classification Scheme 2003

89.20.-a Interdisciplinary applications of physics ( 0 Dok. )

• 89.20.Bb Industrial and technological research and development ( 0 Dok. )
• 89.20.Dd Military technology and weapons systems; arms control ( 0 Dok. )
• 89.20.Ff Computer science and technology ( 0 Dok. )
• 89.20.Hh World Wide Web, Internet ( 0 Dok. )
• 89.20.Kk Engineering (for electrochemical engineering, see 82.47.Wx) ( 0 Dok. )