Publication
-
1. Palaeozoic and Mesozoic Foraminifera Article
Leidse Geologische Mededelingen, 5(1), 23-34.January 1931
-
16. Plantae Article
Leidse Geologische Mededelingen, 5(1), 485-508.January 1931
-
18. Paleozoic Article
Leidse Geologische Mededelingen, 5(1), 552-566.January 1931
-
12. Brachiopoda Article
Leidse Geologische Mededelingen, 5(1), 396-435.January 1931
-
19. Mesozoikum Article
Leidse Geologische Mededelingen, 5(1), 567-610.January 1931
-
23. Surinam Article
Leidse Geologische Mededelingen, 5(1), 690-703.January 1931
-
8. Palaeozoic and Mesozoic Gastropoda, Lamellibranchiata and Scaphopoda Article
Leidse Geologische Mededelingen, 5(1), 164-205.January 1931
-
4. Porifera Article
Leidse Geologische Mededelingen, 5(1), 115-119.January 1931