Bortz, Fred Beyond Jupiter : the story of planetary astronomer Heidi Hammel - 1st ed - New York: Franklin Watts, 2005 - ix, 110 p. : ill. (some col.) ; 26 cm. ISBN: 9780309095525 Subjects--Topical Terms: Hammel, Heidi - Juvenile literature Dewey Class. No.: 520.92 BOR