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Planet visited by Spaceman Spiff in "Calvin and Hobbes"
Answer for the clue "Planet visited by Spaceman Spiff in "Calvin and Hobbes" ", 3 letters:
zog
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Wikipedia
Word definitions in Wikipedia
ZOG was an early hypertext system developed at Carnegie Mellon University during the 1970s by Donald McCracken and Robert Akscyn. ZOG was first developed by Allen Newell and George G. Robertson to serve as the front end for AI and Cognitive Science programs ...