TY  - BOOK
AU  - Friis, Robert H.
TI  - Essentials of environmental health
SN  - 9780763778903: 
PY  - 2012///
CY  - Sudbury MA. : : 
PB  - Jones&Bartlett Learning, 
KW  - Environmental Health EnvironmentalPollution
N1  - Includes bibliographical reference
ER  -