Lähikuva kasvot professori tai opettaja liitutaulu eristetty - Kuvapankin valokuva ja kuva

Elderly teacher. Funny professor or scientist in a elegant suit. Copy space on chalkboard, blackboard, banner

Confident teacher or professor. People scientist occupation concept. Copy space on chalkboard, blackboard, banner

Elderly man teacher on a blank chalkboard during lesson, teaching class at college. Education and knowledge concept. Academic success

Teacher in the classroom near the blackboard is teaching a lesson. Professor at the university is giving a lecture. Teachers day

Serious teacher. Closeup portrait of senior academic professor near empty blackboard. Knowledge and traditional education concept

Professor or serious teacher. Elderly man teacher on a blank chalkboard during lesson, teaching class at college. Think senior

Academic success. Mature elegant professor with glasses. School thinking teacher or college and university lecture

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of smiling happy man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Portrait of senior man with white beard over a wooden background

Senior man. Old man with white beard holding axe on red paper in wooden wall

Senior man. Portrait of senior man with white beard over a wooden background