Climbing the stairs. The structure of water treatment facilities.
Palabras clave
blue,
bridge,
city,
clean,
climb,
dirty,
environment,
facility,
filter,
flow,
industrial,
industry,
landscape,
liquid,
metal,
movement,
nature,
outdoors,
passage,
plant,
pollution,
pool,
process,
processing,
purification,
recycling,
reservoir,
sanitary,
sanitation,
sewage,
sky,
stair,
station,
steel,
step,
storage,
surface,
system,
tank,
technology,
treatment,
utility,
video,
waste,
water,
way
