An examination of the Tertiary and Quaternary changes of sea-level in South Africa, with special stress on the evidence in favour of recent world-wide sinking of ocean-level.
1926. Annals Univ. Stellenbosch V-A-1; 81 pp. 5 photoplts. h.t. 1 large plt. h.t. with map folding-out. Orig. wrps. very good.
Bijdrage tot de kennis der sedimentaire zwerfsteenen in Nederland.
1918. Verh. Geol.-Mijnb. Gen. Ned. en Kol. Geol. Ser. IV-1; 271 pp. 1 fig. 1 gevouwen tabel. Orig.omslag met klein stickertje in hoek en afgeschreven bibl.-stempel, inhoud zeer goed, 4to.
Beitrag zur Geologie des Beckens von Münster, mit Besonderer Berücksichtigung der Tiefbohraufschlüsse nördlich der Lippe im Fürstlich Salm-Salmschen Regalgebiet.
1909. Z. deu. geol. Ges. 61; pp. 230-282, 2 plts. h.t. with maps folding-out. Orig. extract with plain new wrps. as such very good.