Humphreys, L. H. <br/><br/>
Tropical Postures and Podder Crops 
by L. H.Humphreys 
 - London  Longman Group Ltd.  1978 
 - viii,135p.: ill.: diagrs, pictures, tables 
<br/><br/> Includes bibliographical references & index 
<br/><br/><label>ISBN: </label>058260303X