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Showing items 6805 through 6813 of 73627.
Changes in land use on farms at Hengelo were remarkably more frequent than was usually supposed in such areas. The larger farms had a general tendency to decrease in area, while the smaller farms tended to increase in area.
In some crops the quantity of absorbed salts proved to be strongly influenced by concentration in substrate, in other crops much less so. Ca proportion of total absorbed cations limited absorption, whereas salt uptake was favoured by higher temperatures.
Inventarisatie van overstromingen beginnend bij de periode 1800-1916. Uitgebreidere aandacht voor de periode in 1939 en 1940. Daanraanst aandacht voor geïnundeerd grasland.
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