Hughes, Julian. <br/><br/>
Naturetrek environment puzzle book :  (key stages 2 and 3) / 
by Julian Hughes ; editor: M.J. Thomas. 
 - Clwyd, Wales :  Naturetrek Educational,  c1990. 
 - 99 p. :  ill. 
<br/><br/><label>ISBN: </label>094638780X 
<br/><br/><label>LCCN: </label>92016174     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental education--Wales.<br/>Puzzles.