References
CD-ROM
Encarta 97 Encyclopedia
Encarta 98 Encyclopedia
Internet
http://dbhs.wvusd.k12.ca.us/Gallery/Gallery1.html
http://www.wal-lab.com/ssms.html
http://pl.nobel.se/laureates/chemistry-1922-1-bio.html
http://maple.lemoyne.edu/~giunta/aston.html

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