Keywords
18-19 years, 20-24 years, 20-25 years, 20-29 years, 20s, 60-64 years, 60-65 years, 60-69 years, 60s, adolescent, adult, african american, african american ancestry, african american ethnicity, african americans, african ancestry, african descent, asian, asian ancestry, asian ethnicity, asians, asleep, black, black ancestry, black people, black person, caucasian, caucasian ancestry, caucasian ethnicity, caucasians, chinese, chinese ancestry, chinese ethnicity, college students, east asian, east asian ancestry, east asian ethnicity, east asians, female, hispanic, hispanic ancestry, hispanic ethnicity, hispanics, juvenile, latin american, latin american ancestry, latin american ethnicity, latin americans, latin-american, latin-american ancestry, latin-american ethnicity, lazy, lecture, library, male, medium group of people, mid adult, mid-adult, middle aged, middle-aged, middle-aged man, multi ethnic group, note taking, oriental, oriental ancestry, provo, reading, senior adult, seven people, sixties, teen, teenager, twenties, vertical, young, young adult, young adult man, young adult woman, youth, 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, u14515720