J. F. du Toit
发表
R. Pitchford,
J. Meyling,
A. H. Meyling,
1969,
Annals of tropical medicine and parasitology.
R. Pitchford,
E. Young,
P. Visser,
1973,
Journal of the South African Veterinary Association.
R. Pitchford,
J. F. du Toit,
1976,
Annals of tropical medicine and parasitology.