Friis, Robert H. <br/><br/>
Essentials of environmental health. 

 - xxvi, 390p. 
 - Essential public health). .
<br/><br/><label>ISBN: </label>9780763747626 0763747629 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental health<br/>Environmental pollution<br/>Environmental exposure<br/>Occupational health