00450nam a2200145Ia 4500 0000006404 20251012174616.0 721219s1954 nyua 000 0 eng GF31 .B68 304.2 The challenge of man's future; an inquiry concerning the condition of man during the years that lie ahead. New York, Viking Press 1954. 290 p illus 22 cm. Human geography. 7168 7168