Research
On wild birds as transmitters of helminth parasites to domestic stock.
Clapham, P.A. 1940. Journal of Helminthology, 18: 39-44.
On the helminths of corvid birds in the British Isles.
Clapham, P.A. 1940. Journal of Helminthology, 18: 89-94.
Further studies on Coenurus glomeratus.
Clapham, P.A. 1940. Journal of Helminthology, 18: 95-102.