Selektiver Fokus des männlichen Wissenschaftlers in Schutzmaske und Anzug, während er in der Nähe der Kanalisation sitzt - Stockfoto & -bild

Male scientist in protective mask and suit writing in clipboard while sitting near sewerage

Male scientist in protective suit and mask taking sample of water in test flask outdoors

Male scientist putting sample of water in test flask while his female colleague writing in clipboard near sewerage

A man in a protective suit and mask looks away holding a flask with express test

Male scientist in protective mask and suit sitting with working suitcase near sewerage

A man in a protective suit and mask holds a flask of green liquid in his hands and shows his thumb up on the background of sewage pipes coming out from the factory

Male scientist in protective suit and mask holding fish by tweezers near river

Pest control worker spraying pesticides on street with sprayer

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

Pest control worker in respirator holding sprayer

Cropped image of male scientist in latex gloves taking sample of stone by tweezers outdoors

Portrait of pest control worker in respirator looking at camera

Low angle view of pest control worker standing with sprayer

Selective focus of female scientist in protective suit and googles holding clipboard in meadow

Portrait of pest control worker in respirator looking at camera