User:Femto/table melting point

WEL
As quoted at http://www.webelements.com/ from these sources:
 * A.M. James and M.P. Lord in Macmillan's Chemical and Physical Data, Macmillan, London, UK, 1992.
 * G.W.C. Kaye and T.H. Laby in Tables of physical and chemical constants, Longman, London, UK, 15th edition, 1993.

CRC
As quoted from various sources in an online version of
 * CRC Handbook of Chemistry and Physics, 84th Edition; Section 4, Properties of the Elements and Inorganic Compounds; Melting, boiling, and critical temperatures of the elements.