http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a directory of public domain and user-supported software for the IBM-PC, PCjr, and compatibles
PC Software Interest Group (Sunnyvale, Calif.)
Cover title: The PC-SIG library : public domain and user supported software for the IBM-PC.