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Unknown, 1985
Current format, Unknown, 1985, , No Longer Available.
Unknown, 1985
Current format, Unknown, 1985, , No Longer Available. Offered in 0 more formats
Explains the nature of comets, what is known about Halley's comet, and various countries' plans to study it in 1985 and 1986. Makes suggestions for maximum viewing enjoyment.
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