Research
On the larval migration of Syngamus trachea and its causal relationship to pneumonia in young birds.
Clapham, P.A. 1939. Journal of Helminthology, 17: 159-162.
Some polyradiate specimens of Taenia pisiformis and Dipylidium caninum, with a bibliography of the abnormalities occurring among Cestodes.
Clapham, P.A. 1939. Journal of Helminthology, 17: 163-176.
On flies as intermediate hosts of Syngamus trachea.
Clapham, P.A. 1939. Journal of Helminthology, 17: 61-64.
Three new intermediary vectors for Syngamus trachea.
Clapham, P.A. 1939. Journal of Helminthology, 17: 191-192.
On a sex difference in the infection rate of birds with Syngamus trachea.
Clapham, P.A. 1939. Journal of Helminthology, 17: 192-194.
On the Presence of Hooks on the Rostellum of Hymenolepis microps
Clapham, P.A. 1939. Journal of Helminthology, 17, 21-24.
New records of helminths in British birds.
Clapham, P.A. 1938. Journal of Helminthology, 16: 47-48.
Are there host strains within the species of Syngamus trachea?
Clapham, P.A. 1938. Journal of Helminthology, 16: 49-52.
The relation of helminthiasis to leukaemia in domestic fowls.
Clapham, P.A. 1938. Journal of Helminthology, 16: 53-56.
The food of partridge chicks (Perdix perdix) in Great Britain.
Ford, J., Chitty, H., & Middleton, A.D. 1938. Journal of Animal Ecology, 7: 251-265.