N14° E102° 
a 
   
E104° 
motorcycles per household 0—30 100 150 200 7 50km 
  
  
  
102* 104* 
pick-up trucks per household 
  
  
Figure 6 Pick-up Trucks 
| 1988 
N18° 
  
      
N14° E102 " ne aEi0d: N14? plop: Ep 
patients per 1000 people in 2 years 0. 50. 100 150 ‚200, 250Km 
Figure 7 Dysentery 
520 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996