Mannelijke wetenschapper in beschermend masker en pak houden vis door pincet terwijl zijn collega controleren het vergrootglas in de buurt van rivier - Stockfoto’s en -afbeeldingen

Two scientists in protective masks and suits examining fish and writing in clipboard near river

Male scientist in protective mask and suit holding fish by tweezers while his female colleague writing in clipboard outdoors

Female scientist in protective mask and suit writing in clipboard while her colleague putting sample of water

Female and male scientists in protective masks and suits working with digital tablet and looking at camera outdoors

Male scientist in protective mask and suit opening working suitcase while his female colleague writing in clipboard

Two scientists in protective suits and masks examining fish and writing in clipboard outdoors

Female scientist in protective mask and suit writing in clipboard while her colleague putting sample of water near river outdoors

Male scientist in protective mask and suit writing in clipboard near water outdoors

Low angle view of pest control worker standing with sprayer

Pest control worker spraying pesticides on street with sprayer

Portrait of pest control worker in respirator looking at camera

Pest control worker in respirator spraying pesticides with sprayer on building wall

Portrait of pest control worker in respirator looking at camera

Pest control worker standing in respirator in bathroom and looking at camera

Pest control worker in respirator holding sprayer

Pest control worker standing in respirator in bathroom with sprayer