Agriculture in 1970
One Hundred Thousand Tractors: The MTS and the Development of Controls in Soviet Agriculture
by
Miller, Robert F.
A Century of Russian Agriculture: From Alexander II to Khruschev
by
Volin, Lazar
Biology of Aphid Parasites (Hymenoptera: Aphidiidae) with Respect to Integrated Control
by
Starý, P.
The Economics of Subsistence Agriculture
by
Clark, Colin, Haswell, Margaret R.
Neue Ergebnisse Und Probleme Der Pflanzenernährung in Der Deutschen Demokratischen Republik
by
Schilling, Günther