52 



Indiana University Studies 



S2 



1 



SI 























11-12 























10-11 















4- 

















[10 





(~) 



0 









ON 



1 















© 







' 











F 



0 



to) '—J 









OO 



1 

























#® 

 (*) 





□ 



4 



1 Q 





0 





1 









0 





0 



©0 









1 











A 





< 



1 







ITS 



1 























CO 









1 



1 



< 



Q 



5: 











1 









1 



1 



i 











ATTEMPTS ^ 

 DEPENDABILITY 



O 



66-16 



81-90 



o 



1 



61-70 



o 



1 



o 



1 



1 



, 



