TY  - GEN
AU  - Friis, Robert H.
TI  - Essentials of environmental health
T2  - Essential public health)
SN  - 9780763747626
PY  - 2007///
CY  - Sudbury, Mass. : 
PB  - Jones and Bartlett
KW  - Environmental health
KW  - Environmental pollution
KW  - Environmental exposure
KW  - Occupational health
ER  -