Tahta, Sophy. <br/><br/>
Why is night dark? /  [book] 

 - [London, Eng.] :  Tulsa, OK :  Usborne ;  EDC Publishing,  1990. 
 - 24 p. :  col. ill. ;  18 cm. 
 - Usborne starting point science .
<br/><br/> Grade level: 1, 2, 3, p, e. 
<br/><br/> 1, 2, 3, p, e. 
<br/><br/><label>ISBN: </label>0746004281  (pbk.) 0881104426 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Night<br/>Time.<br/>Solar system.
<br/><br/><label>LC Class. No.: </label>QC209.5  / .T358 1990 
<br/><br/><label>Dewey Class. No.: </label>507 TAH