Mitchell Ralph. <br/><br/>
Introduction to environmental microbiology/ 
Ralph Mitchell. 
 - Englewood Cliffs :  Prentice Hall,  1974. 
 - xi, 355p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>013482489x (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microbiology.<br/>Microbial ecology.<br/>Industrial microbiology.