found
:
Work cat.: 9715959: Hoagland, Richard C. Europa, 1997.
found
:
Facts file dict. astron.
(Europa--Def. Smallest of the 4 Galilean satellites of Jupiter and the one inferior in size and mass to the moon.)
found
:
McGraw-Hill dict. sci. tech.
(Europa, also an asteroid)
found
:
Gloss. astron. astrophysics
(Europa (JII))
found
:
NASA
(Europa)
found
:
AP dict. sci. tech.
(Europa)
found
:
Encyc. astron. astrophysics:
under Planetary satellites, pp. 414-416 (Europa)
found
:
Mitton. Conc. dict. astron.
(Europa, also an asteroid)
found
:
Guinness book astron.:
p. 84-85 (Europa, smooth like a billiard ball)
found
:
Dict. astron. space atmos. phen.
(Europa)