Cleal, Christopher J., ed. <br/><br/>
Plant fossils in geological investigation: the palaeozoic /ed. by Christopher J. Cleal 

 - New York  Ellis Horwood  1991 
 - 233p 
 - Ellis Horwood Series in Applied Geology .
<br/><br/><label>ISBN: </label>0136808778 
<br/><br/><label>Dewey Class. No.: </label>561  / N91