Publication
-
A Monograph of the Vochysiaceae. I. Salvertia and Vochysia Article
Recueil des travaux botaniques néerlandais, 41(2), 397-540.January 1948
-
Remarks on the Genera Stahelia and Tapeinostemon (Gentianaceae) Article
Recueil des travaux botaniques néerlandais, 41(1), 145-149.January 1948
-
Notes in the races of Uria aalge (Pont) occurring along the Dutch North Sea coast Article
Limosa, 21(1), 12-14.January 1948
-
Jaarverslag over 1947 Article
Limosa, 21(1), 33-34.January 1948
-
Vergadering in "Artis" te Amsterdam op 18 Januari 1948 Article
Limosa, 21(3), 107-112.January 1948
-
Over het voorkomen van Numenius tenuirostris Vieill. in Nederland Article
Limosa, 21(4), 113-118.January 1948
-
Pteridophyta, Gymnospermae Article
Flora NeerlandicaJanuary 1948
-
Sprinkhanen Article
De Levende Natuur, 51(1), 1-7.January 1948