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RuГидрология болот. Болотоведение
Материалы по теме
"The Most Beloved" note (PA Valuev) on the condition of the European lands covered by bogs (space, number of forests, population, productivity of the soil) and the ways and costs of their dehumidification; his report on the Department of Agriculture and R
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Valuev Petr Alexandrovich, Earl (1814-1890). Minister of Internal Affairs, Minister of State Property, Chairman of the Committee of Ministers, member of the State Council. "The Most Beloved" note (PA Valuyev) on the state of the European lands covered with swamps (space, number of forests, population, productivity of the soil) and the ways and costs of their dehumidification; his report on the Department of Agriculture and Rural Industry of the IGO on the sending abroad of the vice inspector of the Corps of Forester Augustinovich for acquaintance with the work on the drainage of marshes in Western Europe. |