Keywords
60-64 years, above 30, authority, bavaria, blackboard, caucasian appearance, class, classroom, color, confidence, education, education occupation, expertise, front view, germany, high school, indoors, lab coat, learning, looking at camera, manching, one person, open, part of, photography, portrait, science, selective focus, senior men, series, shirt and tie, teacher, teaching, textbook, vertical, waist up, well-dressed, working, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, 943025