Columbia University [Study lounge.]
Columbia University [Students in a study lounge.]
Columbia University [Study group.]
Columbia University [Group of students studying.]
Columbia University [Students in a seminar or study group.]
Columbia University [Students and professor in a study group.]
Columbia University [Students studying.]
Columbia University [Mass examination.]
Columbia University [Class at Columbia University.]
Columbia University [Writing the Columbia Spectator.]
Columbia University [Class at Columbia.]