Allen, Gwen. <br/><br/>
Trees / 
by Gwen Allen, Joan Denslow; drawings by Tim Halliday, photographs by Maurice Nimmo. 
 - London  Oxford University Press  1970. 
 - 64p. (chiefly ill. (chiefly col.)) 21 cm. 
 - The clue books .
<br/><br/>bibl p64 
<br/><br/><label>ISBN: </label>0199180067 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trees--Juvenile literature.