RESEARCH METHODS IN STUDY OF FOREST ENVIRONMENT. 53 



2 



■ I 



s£ 



S — 



as 



S-S 



ftis 



si 



5^ 



H Gl 

 *3 *-• 



O S 



"J 



8.8 



C3 j^ 



g| 



fA oi 



•c-9 



■c £5 



all 



o o « 

 to P.'- 



^~ 03 

 03 "5 t- 

 3 £ W 



w o '5i.O 



.2 <»p >- 



C a 53 



8-c2p 



I'g'l a 



sis ^ 



*"3"32 



OX) 5! g 

 JS M MO 



•* S3 S XI 

 S*@ 8 



- .. O l. 



5s> 



