Branley, Franklyn Mansfield. <br/><br/>
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 .
<br/><br/> 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. 
<br/><br/><label>ISBN: </label>0690044143 
<br/><br/><label>LCCN: </label>83046161 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Halley's comet<br/>Comets
<br/><br/><label>LC Class. No.: </label>QB721.5.B73 1984 
<br/><br/><label>Dewey Class. No.: </label>523.6