Abstract
Eastern Europe, extending from northern Russia to Czechoslovakia and Bulgaria, embraces a wide range of climates, all experiencing wider extremes of temperature and humidity than the maritime climates of the West. Noteworthy technological features of horticultural production include the development of walk-in plastic tunnels supported on tubular metal frames, the use of power station waste water for greenhouse heating, and the large-scale use of peat as a substrate in place of soil.
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