Branley, Franklyn Mansfield.
Comets / by Franklyn M. Branley ; illustrated by Giulio Maestro. - New York : Crowell, c1984. - 32 p. : ill. - A Let's read and find out science book .
Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.
0690044143
83046161
Halley's comet
Comets
QB721.5.B73 1984
523.6
Comets / by Franklyn M. Branley ; illustrated by Giulio Maestro. - New York : Crowell, c1984. - 32 p. : ill. - A Let's read and find out science book .
Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.
0690044143
83046161
Halley's comet
Comets
QB721.5.B73 1984
523.6