Männliche Wissenschaftler in Schutzmaske und Anzug schreiben in Klemmbrett, während sie in der Nähe der Kanalisation sitzen - Stockfoto & -bild

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

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

Selective focus of male scientist in protective mask and suit writing in clipboard while sitting near sewerage

Male scientist in protective mask and suit holding working suitcase near sewerage

Female scientist pointing on water of sewerage to male colleague with laptop

Selective focus of female scientist with clipboard pointing to male colleague with laptop near sewerage

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

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

Pest control worker spraying pesticides on street with sprayer

Low angle view of pest control worker standing with sprayer

Pest control worker spraying pesticides with sprayer on building wall on street

Portrait of pest control worker in respirator looking at camera

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

Portrait of pest control worker in respirator looking at camera