Jonge knappe bebaarde man wetenschapper of professor met lange baard en leraar bril met boek of briefpapier aan tafel zit met opgeheven vinger geïsoleerd op witte achtergrond - Stockfoto’s en -afbeeldingen

Young handsome bearded man scientist or professor with long beard and teacher glasses with book or notepaper sitting at table with raised finger isolated on white background

Young handsome bearded man scientist or professor with long beard and teacher glasses with red book or notepaper sitting at table with wooden cubes on light background

Young handsome bearded man scientist or professor in teacher glasses with long beard with green blackboard chalk and book or notepaper sitting at table isolated on white background

Young handsome bearded man scientist or professor businessman with long beard in jacket holding book or notepaper and pencil on grey background

Young handsome bearded man scientist or professor with long beard and teacher glasses with red book or notepaper sitting at table with wooden cubes on grey background

Young handsome bearded man scientist or professor with long beard and teacher glasses with book or notepaper sitting at table on light background

Young handsome bearded man scientist or professor with long beard and teacher glasses with book or notepaper sitting at table with wooden cubes isolated on white background

Young handsome bearded man scientist or professor with long beard and teacher glasses with book or notepaper sitting at table with wooden cubes isolated on white background

Thinking man. Portrait of a teacher or professor at classroom. Satisfied serious mature teacher. Mature professor, middle aged teacher man. Serious teacher, confident professor concept

Business man is thinking about something with pencil. Young thoughtful bearded man thinking about test

Businessman. manager or bearded man with long beard and stylish hair on surprised face in tie and white shirt on beige background hold mobile phone, conversation and information

Business man is thinking about something with pencil. Business dreams. Thoughtful young man in shirt and tie holding note pad and pen

Handsome attractive business man having raised pen and notebook in hands, isolated on white background

Business man in shirt and tie holding note pad and pen. Close up profile of surious man. Idea. Portrait of attractive intellectual business man thinking about notes

Man or businessman with serious face hold notebook and money box on beige background

Teachers day - knowledge and educational school concept. Friendly teacher in classroom near blackboard desk. Chalkboard copy space

Crazy business man, excited emotions. Exhausted young man hold head with laptop at home workplace, sleepy guy feel fatigue taking nap near laptop