Geology and paleontology of East Camaguey and West Oriente, Cuba.
1945. Diss. Univ. Utrecht; Publ. Geogr. Min.-Geol. Inst. RU Utrecht, Phys.-Geol. Reeks (2) 7; 75 pp. few figs. 5 plts. (most with microfossils, 1 fold. & col. pl. w. geol. map in pocket. Orig. wrps. small libr. sticker at base of spine, 4to.
Outline of the geology and petrology of Surinam (Dutch Guiana).
1931. Diss. Univ. Utrecht. 519 pp. fp. 63 fig. 48 photoplts. h.t. 4 plts. with maps folding-out, 2 fold. maps in pocket. Orig. printed covers, small libr. ticket at base of spine and stamp on title page, otherwise very good, 4to.