Keywords
25-29 years, above 25, adding machine, adding machines, adult, alone, book, books, calculator, calculators, casual, casual appearance, casual clothes, casually dressed, chinese, college student, college students, concentrate, concentrates, concentrating, concentration, contemplate, contemplating, contemplative, eyeglasses, focus, focusing, glasses, hand, hands, hardback book, hardback books, hardcover, hardcover book, hardcover books, hardcovers, head and shoulders, hold, holding, indoors, learn, learning, male, males, men, model release, model release yes, model released, office equipment, office machine, office machines, office supplies, one, one only, one person, pencil, pencils, people, person, research, researching, student, students, study, studying, think, thinking, thoughtful, university student, university students, vertical, work, working, write, writing, young, young adult, young man, 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, a00421