Arthur Newton Pack, assoc. ed. books & textbook
Nature Magazine, June 1925 (V)
Percival. S. Ridsdale Arthur Newton Pack, assoc. ed. Richard W. Westwood, ass't ed. R. Bruce Horsfall, artist
American Nature Association /1925T Paperback
Nature Magazine, January 1925, Vol. 5 No. 1
Percival. S. Ridsdale Arthur Newton Pack, assoc. ed. Richard W. Westwood, ass't ed. R. Bruce Horsfall
American Nature Association /1925T Paperback
Nature Magazine, February 1925 (V)
artist R. Bruce Horsfall Percival. S. Ridsdale assoc. ed. Arthur Newton Pack ass't ed. Richard W. Westwood
American Nature Association /1925T Paperback
