Brown, Harrison

Are our descendants doomed? Edited by Harrison Brown and Edward Hutchings, Jr 1972 Chanllenge of Man's future BROWN, Harrison 1960 Populatio Perspective 1973 Brown, Harrison 1973 Population: Perspective 1973 Brown, Harrison Year not listed Population: perspective, 1971 American Universities Field Staff 1972 The challenge of man's future Brown, Harrison 1954