TY  - BOOK
AU  - Friis, Robert H.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 763747629
SN  - 2
PY  - 2007///;copyright 2007.46
CY  - Boston
PB  - Jones and Bartlett
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Environmental health
N1  - Includes bibliographical references and index; 5
ER  -