1941-1954 2 vols. 98, 346 p., 28, 15 figs, 5, 14 (several col.) pls, 27 tables, roy. 4to, boards. Library stamps. Published in: Mémoires du Musée Royal d'Histoire Naturelle.
1941-1954 46 p., 28, 15 figs, 14 (several col.) pls, roy. 4to, cloth. Published in: Mémoires du Musée Royal d'Histoire Naturelle. Very good copy.
2. Bruxelles, Institut Royal des Sciences Naturelles, 1954, in-4°, 346 pp + 14 coloured plates + 27 tabels , sewn, orig. stiff wrapper ( wrapper with frayed margins, interior fine and unopened). Inventory and description of the algae found in the brackish water of the Scheldt estuary near Lilloo ( downstream Antwerp ). The first part (not present here), describes the biotope.