http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Passive fetal heart rate monitoring apparatus and method with enhanced fetal heart beat discrimination
National Aeronautics and Space Administration.
inventors, Stephen A. Zahorian, David L. Livingston, Robert A. Pretlow III.
Title from PDF title screen (NASA, viewed July 6, 2010).