Phobos < Mars < Unmanned

National Space Science Data Center - Phobos Project Information
nssdc.gsfc.nasa.gov/planetary/phobos.html
Phobos 1 & 2 to Mars
The objectives of the Phobos missions were to conduct surface and atmospheric studies of Mars and study the surface composition of the Martian satellite Phobos.
solarviews.com/eng/phobos12.htm