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1.
Acid rain
Subjects
Rain and rainfall
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2.
Acis soils
Subjects
Soils
-
3.
Acritarchs
Subjects
FossilsMicroorganisms
-
4.
Age of the Earth
Subjects
-
5.
Agricultural meteorology
Subjects
Meteorology
-
6.
Alabaster
Subjects
-
7.
Albitite
Subjects
Igneous rocks
-
8.
Alexandrite
Subjects
-
9.
Alkalic igneous rocks
Subjects
Igneous rocks
-
10.
Alluvial fans
Subjects
-
11.
Alluvial streams
Subjects
Rivers
-
12.
Alluvium
Subjects
Sediments (Geology)
-
13.
Altitudes
Subjects
Geospatial dataPhysical geography
-
14.
Amber
Subjects
Precious stones
-
15.
Ammonoidea
Subjects
Fossil cephalopoda, Fossil
-
16.
Amphiboles
Subjects
Silicates
-
17.
Anàlisi de roques
Subjects
Analytical geochemistry
-
18.
Analytical geochemistry
Subjects
GeochemistryAnalytical chemistry
-
19.
Andesite
Subjects
Igneous rocks
-
20.
Anemomèter
Subjects
Meteorological instruments
-
21.
Animal tracks
Subjects
-
22.
Anthropocene
Subjects
Quaternary
-
23.
Aplite
Subjects
Igneous rocks
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24.
Aproz (Trademark)
Subjects
Trademarks
