Notes on North American fleas

Published in 1929 in Novitates Zoologicae Tring, volume 35, on pages 28-39
Authors: Karl Jordan

New Palaearctic Geometridae

Published in 1929 in Novitates Zoologicae Tring, volume 35, on pages 142-149
Authors:

Some new Palaearctic fleas

Published in 1929 in Novitates Zoologicae Tring, volume 35, on pages 178-186
Authors: