["JUVENILE NONFICTION \/ Readers \/ Beginner","JUVENILE NONFICTION \/ Science & Nature \/ General (see also headings under Animals or Technology)","Buoyant ascent (Hydrodynamics);Juvenile literature.","Floating bodies.","Floating bodies;Juvenile literature.","Buoyant ascent (Hydrodynamics);Juvenile literature.","COMPUTER SCIENCE (GENERAL)","Easy Non-Fiction","Easy Reader","Floating bodies.","Floating bodies;Juvenile literature.","JUVENILE","JUVENILE NONFICTION \/ Readers \/ Beginner","JUVENILE NONFICTION \/ Science & Nature \/ General (see also headings under Animals or Technology)","Juvenile Grades 1-2 Ages 6-7","Monograph Series, any","Pictorial treatment","United States"]