ISSN 1732-5587
e-ISSN: 2956-7971
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oak
oats
object analysis
objects’ subsets
observational me-thod
obsolete pesticides
occurrence
oder river valley
odoriferous substances
odra valley
of xerothermic swards
offer
oil
oil rose
oily bleaching earth
old river
old waste disposals
oława river
on site wastewater treatment
one-dimensional modeling
one-sheet hyperboloid
one-year old european larch seedlings
one-year old scots pine seedlings
onion
on-site sewage treatment facility
on-site treatment plant
opawskie mountains
open channel
open pit
operating costs
operation
operation of wastewater treatment plant
operational programmes
operations principle
opium poppy processing solid waste
opoka
opole
opole voivodeship
opolskie voivodeship
opportunities
optical do sensors
optimal precipitation
optimal rainfall
optimal state
optimal use of land
optimisation of measurement technology
optimization
optimization of the farmlands plain
optimization of the plain of lands
optimum rainfall
orchard
orchard litter
orchard plants
orchards
order
order and cleanliness in the commune
ordinary least squares linear regression
organic and biogenic pollutants
organic apple
organic compounds
organic cow’s and goat’s milk
organic cultivation
organic farms
organic fertilization
organic fraction of the municipal waste
organic kitchen wastes
organic matter
organic mulches
organic pesticides
organic sewage
organic soil
organic substance
organization
organizations
organs
oribatid mites
oribatida
orientation images
ornamental horticulture
ornamental nurseries
ornamental nursery
ornamental plant nursery
ornamental plant production
orthophotomap
orthophotomaps
ortofotomapa
osmopriming
ostrzeszów commune
other gainful activity
other gainful activity (oga
outdoor relative humidity
outlays
outliers
outliers observations
outline of the building
oversize fraction
ownership
ownership right
oxbow lake
oxbow lakes
oxygen concentration
oxygen demand
oxygenation
ozonization