Steel, Duncan,  <br/><br/>
Target earth 

 - 160 pages :   colour illustrations ;   23 cm 
<br/><br/><label>ISBN: </label>070543365X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comets. ; Asteroids Collisions with Earth.
<br/><br/><label>Dewey Class. No.: </label>523.5