http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"Several hundred technically acceptable PCMs were identified in Volume I of this set, and some of their thermodynamic and physical properties were present. Out of these, practical considerations have reduced the list to a few commercial PCMs for solar energy thermal storage heating and cooling applications. In Volume II these PCMs and their technology and discussed."--Provided by publisher.