aqua
aquifer
artesian
banner
clay
cross
cut
diagram
dirt
earth
education
environment
extraction
filter
geological
geology
gravel
ground
groundwater
horizons
illustration
isolated
landscape
layers
limestone
lower
natural
outdoor
pipeline
poster
profile
reservoir
rise
rock
sand
sandstone
schematic
science
section
soil
storage
structure
top
water
well
定額
Artesian water well in cross section, schematic education poster. Groundwater, sand, gravel, loam, clay, extraction of moisture from the soil, vector illustration.の素材 [FY310109470697]
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