Junger bärtiger Mann Wissenschaftler oder Professor mit langem Bart und Lehrerbrille mit Buch oder Notizbuch sitzt am Tisch mit Holzwürfeln auf weißem Hintergrund - Stockfoto & -bild

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

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

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

Funny smiling bearded programmer with tousled hair sitting at office desk with laptop at workplace

Online job. Business communication. Internet surfing. Modern technology. Web developer. Desperation sometimes drives innovation. Handsome man run online business. Sales manager work online in office.

Crazy bearded programmer with tousled hair shouts sitting at office desk with laptop at workplace

Portrait of serious teacher in school classroom. Tutor, professor, mentor man at desk. Studying, learning, training concept

Portrait of serious teacher in school classroom. Tutor, professor, mentor man at desk. Studying, learning, training concept

Good smiling bearded young geek with tousled hair sitting at desk with laptop in office

Teacher working at desk. Portrait of thinking male teacher, professor, tutor, mentor in school classroom

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

Serious bearded workman with stethoscope around his neck with arm out sitting at desk with laptop and microscope at workplace

Confident boss, bossy business man. Successful director sitting in office with a laptop. Portrait of serious leader looking at camera

Employee talk on video call have online meeting briefing from home office. Cheerful businessman working at desk in home