Columbia subject headings:
Artificial satellites in remote sensing--Congresses.
Artificial satellites--Control systems--Congresses.
Earth Observing System (Program)--Congresses.
Remote sensing--Congresses.
Harvard subject headings:
Artificial satellites in remote sensing--Congresses.
Artificial satellites--Control systems--Congresses.
Earth Observing System (Program)--Congresses.
Remote sensing--Congresses.
Scientific satellites--Congresses
Princeton subject headings: