Petrus Johann du Toit (Portuguese Wikipedia)
Analysis of information sources in references of the Wikipedia article "Petrus Johann du Toit" in Portuguese language version.
doi.org
dx.doi.org
- Kingwill, D. G.; Schonland, B. J. F. (1969). «Petrus Johann du Toit 1888-1967». Biographical Memoirs of Fellows of the Royal Society. 15. 247 páginas. doi:10.1098/rsbm.1969.0013
- Brown, K. (2005). «Tropical Medicine and Animal Diseases: Onderstepoort and the Development of Veterinary Science in South Africa 1908–1950*». Journal of Southern African Studies. 31 (3): 513–529. PMC 1440926
. PMID 16628249. doi:10.1080/03057070500202139
nih.gov
ncbi.nlm.nih.gov
- Brown, K. (2005). «Tropical Medicine and Animal Diseases: Onderstepoort and the Development of Veterinary Science in South Africa 1908–1950*». Journal of Southern African Studies. 31 (3): 513–529. PMC 1440926. PMID 16628249. doi:10.1080/03057070500202139