by Len Verwoerd
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The distribution and prevalence of physi...
Preliminary report on the occurrence in ...
Die besmettingsvermoë van die teleuto-st...
Ancestors of Christiaan Hendrik Persoon
Peronospora mesembryanthemi,n.sp., die o...
Descriptions of some new species of Sout...
Some account of the Lycoperdon solidum o...
Notes on Calvatia (Lycoperdaceae), I-
The history and description of a minute ...
Additional notes on the Lycoperdaceae of...
Champignons hypogés de la famille des Ly...
An essay towards an history of the Briti...