abastecimiento de agua
(
1
)
acid pollution of rivers, lakes, etc
(
1
)
acidez
(
1
)
acidite
(
1
)
acidity
(
1
)
amelioration des habitats
(
1
)
amenagement hydraulique
(
1
)
amendement calcique
(
1
)
approvisionnement en eau
(
1
)
aquatic biology
(
1
)
biomedical and life sciences
(
1
)
cal
(
1
)
calidad del agua
(
1
)
congresses
(
1
)
enmiendas calizas
(
1
)
environmental aspects
(
1
)
fish culture
(
1
)
fish habitat improvement
(
1
)
fish-culture
(
1
)
fish-culture -- water-supply
(
1
)
fish-culture water-supply
(
1
)
fishes
(
1
)
freshwater
(
1
)
freshwater & marine ecology
(
1
)
habitat improvement
(
1
)
lakes
(
1
)
life sciences
(
1
)
lime
(
1
)
limestone
(
1
)
liming materials
(
1
)