Allen , Gwen <br/><br/>
Flowerless plants / 
by Gwen Allen, Joan Denslow ; illustrations by Tim Halliday 
 - London :  Oxford University Press,  1973 
 - 64 p. :  ill. (some col.) ;  21 cm . 
 - Clue books .
<br/><br/>Bibl.: p.64. - Index 
<br/><br/><label>ISBN: </label>019918027X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptogams--Juvenile literature