Agrikultur & biologi
aquifers
93%
Bolivia
77%
groundwater
73%
isotopes
69%
alluvial aquifer
33%
Paria
29%
water
27%
hydrologic cycle
24%
carbon radioisotopes
24%
deuterium
21%
tritium
20%
infiltration (hydrology)
19%
space and time
18%
dry environmental conditions
18%
stable isotopes
17%
evaporation
16%
electrical conductivity
16%
highlands
15%
mountains
13%
rivers
13%
oxygen
11%
heat
9%
Mark- och miljövetenskap
isotope
50%
aquifer
49%
groundwater
40%
upland region
24%
hydrologic cycle
21%
water
20%
deuterium
19%
tritium
19%
aridity
18%
alluvial fan
18%
oxygen isotope
16%
seasonality
15%
flow pattern
15%
electrical conductivity
15%
residence time
14%
isotopic composition
14%
stable isotope
14%
infiltration
13%
evaporation
13%
contamination
11%
mountain
11%
river
8%
Medicin och livsvetenskap
Bolivia
100%
Groundwater
99%
Isotopes
73%
Water
30%
Oxygen-18
21%
Water Cycle
20%
Electric Conductivity
16%
Deuterium
15%
Tritium
14%
Rivers
13%
Hot Temperature
8%
Kemiska föreningar
Groundwater
72%
Isotope
58%
Tritium
25%
Stable Isotope
24%
Residence Time
23%
Deuterium(.)
20%
Evaporation
19%
Electrical Conductivity
17%
Flow
14%
Time
8%
Surface
7%
Samhällsvetenskap
Bolivia
76%
water
53%
Hydrologic cycle
33%
subversion
20%
fan
18%
environmental pollution
17%
river
16%
exploitation
15%
time
11%
interpretation
10%
lack
8%
management
8%