BACTERIA AND ENZYMES IN AGRICULTURE 273 



= 2 I' 





| 1 

 d I 



a 



M 



I 



> 



2 



M 



3 



I i. s 



03 <3 



g W 2 ~ -2 



* -I 



CO fl 



W S3 



1 



* 



g i . 



P "jT-g 



3 

 * 



' 



188 



I 



^^ 

 1^ 



OH -*^ 



2 i 



II 



1 

 i 







..! 



< 





