Zeitschrift für das landwirtschaftliche Versuchswesen in Deutsch-Österreich

22.1919 Google-USA* (Wisconsin) (21+22)
- nur Hefte 1-8 & 11-12 Minnesota-USA* = Google-USA* (21 + 22, Hefte 1-8 & 11-12)
23.1920 Penn State-USA* = Google-USA* (23+24)
24.1921 Penn State-USA* = Google-USA* (23+24)
25.1922 Illinois-USA* = Google-USA* (25-27)
26.1923 Illinois-USA* = Google-USA* (25-27)
27.1924 Illinois-USA* = Google-USA* (25-27)
28.1925 Illinois-USA* = Google-USA* (28)