Zamyšlený šedivé vlasy profesor stál u tabule s kouskem křídy - Stock fotografie a obrázky

Smiling senior lecturer standing in classroom and looking at camera

Grey hair professor looking at blackboard

Smiling grey hair professor sitting on table with laptop

Side view of grey hair professor correcting something at blackboard

Grey hair professor holding paper plane in lecture hall

Side view of grey hair professor drawing with piece of chalk at blackboard

Smiling grey hair professor standing with crossed arms

Grey hair professor talking by smartphone and looking at camera

Try this. what angle you look. geometric shapes. high school modern education. senior man teacher use ruler while drawing. tutor man in glasses draw with ruler on blackboard. back to school.

Grey hair professor talking by smartphone and looking away

Bearded senior businessman in eyeglasses reading blurred newspaper isolated on dark grey

Senior man in stylish tweed suit looking away in front of white brick wall

High angle view of handsome grey hair man reading business newspaper on sofa at home

Senior ayurveda coach pointing at flip chart with human chakras scheme and looking at camera

Focused senior writer reading manuscript with magnifying glass

Handsome grey hair man taking selfie with smartphone in kitchen

Happy bearded speaker in glasses talking near microphones and brick wall

Full length view of man in suit and eyeglasses sitting on high stool and reading newspaper on dark grey

High angle view of bearded mature businessman in eyeglasses looking at camera in office

Senior man in tweed suit reading notes in notebook with magnifying glass