A twelve-year-old's intergalactic friend Dandelion helps his engineer father repair a space probe to Uranus and provides the rest of the family with a space adventure.
Used availability for Gene DeWeese's The Calvin Nullifier
Hardback Editions
October 1987 : USA Hardback

Title: The Calvin Nullifier
Author(s): Gene DeWeese
ISBN: 0-399-21466-6 / 978-0-399-21466-0 (USA edition)
Publisher: Putnam Juvenile
Availability:
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August 1989 : USA Paperback
Title: The Calvin Nullifier
Author(s): Gene Deweese
ISBN: 0-440-40214-X / 978-0-440-40214-5 (USA edition)
Publisher: Yearling
Availability:
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