Bowen, Herbert Courthope. Froebel and education by self-activity by H. Courthope Bowen. - New York Scribners 1893. - ix, 209 p. Bibliography: p. 202-204. LCCN: 91011024 //r84 Subjects--Personal Names: Fröbel, Friedrich 1782-1852. LC Class. No.: LB637 / .B7 1903a Dewey Class. No.: 370/.924