Veen, Egbert. Een Hollandsch-Belgische tol unie? - Amsterdam, L.J. Veen, 1945. - 34 p. 20 cm. - Na-oorlogsche problemen . LCCN: af 48004497 Subjects--Topical Terms: Customs unions. Subjects--Geographic Terms: Netherlands--Commerce--Belgium.Belgium--Commerce--Netherlands. LC Class. No.: HF3618.B4 / V4