When is a planet not a planet? :
Scott, Elaine, 1940-
When is a planet not a planet? : the story of Pluto / by Elaine Scott. - New York : Clarion Books, c2007. - 43 p. : ill. (some col.) ; 26 cm.
Includes bibliographical references and index.
Introduction --The wanderers -- Some early astronomers -- Ideas that work--and those that don't -- Pluto's problems -- Finding planets -- What is a planet?
9780618898329
2006100684
Pluto (Dwarf planet)
QB701 / .S36 2007
523.48/2
When is a planet not a planet? : the story of Pluto / by Elaine Scott. - New York : Clarion Books, c2007. - 43 p. : ill. (some col.) ; 26 cm.
Includes bibliographical references and index.
Introduction --The wanderers -- Some early astronomers -- Ideas that work--and those that don't -- Pluto's problems -- Finding planets -- What is a planet?
9780618898329
2006100684
Pluto (Dwarf planet)
QB701 / .S36 2007
523.48/2