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17 13
Sinanodonta spp. 1
- 203 -
25 21 1
3 2015 9 26 12 14
1L 3 a
(CV)
GIS Geographic Information Systems; QGIS ver2.14 , http://www.qgis.org
+ /ml2015 9 2 9 15
2
t (independent t-test) P<0.05
25 10 15 54
, ,
- 204 -
4
- 205 -