http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sheet Metal and Air Conditioning Contractors' National Association (U.S.)
1 volume (various pagings) : illustrations ; 28 cm.
[2]. SMACNA technical manual registration card for architectural sheet metal manual 6th edition
Includes bibliographical references and index.