Databases
http://webbook.nist.gov/ (Rank: 88706)
http://physics.nist.gov/cuu/Constants/ (Rank: 604603)
http://allen.rad.nd.edu/ (Rank: 899766)
http://www.emsl.pnl.gov/forms/basisform.html (Rank: 957530)
http://qcldb2.ims.ac.jp/ (Rank: 1121955)
http://www.asiinstr.com/technical/Dielectric%20Constants.htm (Rank: 1338044)
http://physics.nist.gov/PhysRefData/contents.html (Rank: 1372709)
http://spec.jpl.nasa.gov/ (Rank: 1889932)
http://www.me.berkeley.edu/gri_mech/data/rxns_static.html (Rank: 1928174)
http://cst-www.nrl.navy.mil/database.html (Rank: 1986299)
http://www.chem.ualberta.ca/courses/plambeck/p101.new/p0040x.htm (Rank: 2017013)
http://www.asiinstr.com/technical/Material_Bulk_Density_Chart_A.htm (Rank: 2380354)
http://www.questconsult.com/~jrm/thermot.html (Rank: 2801434)
http://www.surface-tension.de (Rank: 4054967)
ftp://helix.nih.gov/ncidata (Rank: 4250220)