Thomas,  G B B  . <br/><br/>
Biology functional systematic and environmental /  
by G B B Thomas and M F S Thomas. 
 - Kolkata :   Hulton educational publication ,   1978. 
 - 576p. :   ills. pictures,figs,charts ;   24cm .  
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0717507599  NULL 
<br/><br/><label>Subjects--Index Terms: </label>BIOLOGY 
<br/><br/><label>Dewey Class. No.: </label>570  / THO/B