Anderson, Hazel C.. Properties of Compounds in Coal-Carbonization Products. [Washington D.C.]. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc38798/. Accessed May 24, 2013.
Anderson, Hazel C.. Properties of Compounds in Coal-Carbonization Products. [Washington D.C.]. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc38798/. Accessed May 24, 2013.