Sheldon, Christopher <br/><br/>
Environmental management systems :  a step-by-step guide to implementation and maintenance / 
Christopher Sheldon and Mark Yoxon 
 - 3rd ed. 
 - London :  Earthscan,  2006 
 - 280 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>1844072576 9781844072576 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental management