TY  - BOOK
AU  - Checkoway, Harvey; Pearce, Neil; Kriebel, David, 
TI  - Research methods in occupational epidemiology/ 
SN  - 9780195092424
U1  - 616.980 307 2  
PY  - 2004///
CY  - Oxford
PB  - Oxford University Press
KW  -  
ER  -