FIGURE 20. b HCH Concentrations 

 South and Central America 



10 



20 



ng/g dry wt. 

 30 40 



50 



60 



70 



MELM 



BEBC = = 

 COBC E: 



4> 



"O 



o 

 O 



c 

 o 



2 CHPA 

 CHCO 



CHLS 



PEPA 



PECA 



COBT 



PAPC 



CRPZ 



CREC 



HOGF 



MELV $ 



MESF 



IVEPB 



48 



