€ 5,00
(after 1975). 40 p.; ills. Wrs. 21 cm (St. on title)
Groningen, Wolters-Noordhoff, n.d.
democratie
Leuven, Davidsfonds, (1948).
Groningen, Djakarta, Wolters, 1957.
Chicago, Argonaut, 1967.
Berkeley & Los Angeles, University of California Press, 1957.
