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A global observational analysis to understand changes in air quality during exceptionally low anthropogenic emission conditions.
Environ Int. 2021 Dec;157:106818. doi: 10.1016/j.envint.2021.106818. Epub 2021 Aug 20.
Environ Int. 2021.
PMID: 34425482
Free article.
Modelling the historical distribution of schistosomiasis-transmitting snails in South Africa using ecological niche models.
Ayob N, Burger RP, Belelie MD, Nkosi NC, Havenga H, de Necker L, Cilliers DP.
Ayob N, et al. Among authors: havenga h.
PLoS One. 2023 Nov 30;18(11):e0295149. doi: 10.1371/journal.pone.0295149. eCollection 2023.
PLoS One. 2023.
PMID: 38033142
Free PMC article.
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Letter: Copper seven intra-uterine device.
Havenga HR.
Havenga HR.
S Afr Med J. 1973 Dec 1;47(47):2260.
S Afr Med J. 1973.
PMID: 4767896
No abstract available.
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[Health instruction].
HAVENGA HS.
HAVENGA HS.
Public Health. 1962 Nov;62:11-2.
Public Health. 1962.
PMID: 13961074
Afrikaans.
No abstract available.
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