"ISIS" . "ISIS (satellite)#ISIS 2" . "1969-009A" . . . "ISIS 2" . . . "ISIS II" . . "ISIS satellite program" . "International Satellite for Ionospheric Studies" . . "ISIS-II" . "International Satellites for Ionospheric Studies" . "03669" . . "ISIS (satellite)" . "ISIS 1" . . "ISIS (satellite)" . "1969-01-30" . .