Keywords
1717, 18-19, 18-19 years, 45-50, 45-50 years, adult, adults, adults only, african, african ethnicity, book, brown, brown hair, casual, casual clothing, caucasian, caucasian ethnicity, classroom, cloth, clothing, concentration, contemplation, down, education, effort, equipment, ethnicity, explain, explaining, feb07, formal, formal clothing, front, front view, group, hair, high, high school student, indoors, jacket, knowledge, lab, laboratory, laboratory equipment, learn, learning, listen, listening, look, looking, looking down, mature, mature adult, mature men, men, microscope, multi-ethnic, multi-ethnic group, notebook, occupation, only men, pencil, people, professional, professional occupation, purestock, school, science, science lab, sit, sitting, sseditor=jm, stand, standing, student, teach, teacher, teaching, think, thinking, tough, two, two people, utensil, view, waist-up, write, writing, writing utensil, years, young, young adult, young men, 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, 1574r-25377, 1574r 25377, 1574r25377