NÖLB ) Helleiner, Karl F., 1902-1984: Population movement and agrarian depression in the later middle ages. - o.O., 1919. - S. 368-377 ( Kollat: S. 368-377)Aus: Canadian journal of economics and political science ; 15. 1919, 3
Sign.: LA: Lsd 688 * Regal: NÖ Landesarchiv SD