http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
your best options for solar heating and cooling, wood, wind, and photovoltaics
xxix, 288 pages : illustrations ; 24 cm.
by Dan Halacy ; edited by Carol Hupping ; illustration, Frank Fretz, Brian Swisher ; editorial assistance, Cheryl Winters Tetreau [and others].