Amst., Paris, 1939.
(VIII),275 p. Wrs. (Diss.)(Cover sl. worn)
Amsterdam, H.J. Paris, 1939.
(VIII),275 p. Boards. 22 cm (Dissertation, VU Amsterdam) (Rebound)
Bilthoven, Creyghton, 1970.
(VII),140 p. Cloth 26 cm (Dissertation, trade edition)
Bilthoven, Creyghton, 1970.
(VII),140 p. Stiff wrappers 25 cm (Dissertation, University of Utrecht)