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The tree is named for Christine Buisman, the first full-time elm researcher (1927-1936) in the Netherlands, who provided the final proof that Graphium ulmi Schwarz (now: Ophiostoma ulmi (Buisman) Melin & Nannf.) was the causal agent of Dutch elm disease. Buisman died in 1936, aged 36. [citation needed]
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The Dutch people inhabiting the region had at first built primitive dikes to protect their settlements from the sea. [1] In the northern parts of the Netherlands sea levels fell exposing new land at a rate of 5–10 meters per year between 500 BC and 500 AD. This natural process was exploited to claim new agricultural lands.
Spanbroekmolen is a small group of farms in Heuvelland, a municipality located in the Belgian province of West Flanders. The hamlet is sited on one of the highest points of the Messines Ridge, in between the villages of Kemmel , Wijtschate and Wulvergem .
The White Pine Hollow State Forest is a 944-acre (382 ha) forested area in Dubuque County, Iowa, United States. Of the forest, a 712-acre (288 ha) [2] tract is a National Natural Landmark and Iowa State Preserve. The state forest is named after its dominant old-growth tree, the white pine.
The County of Flanders was created in the year 862 as a feudal fief in West Francia, the predecessor of the Kingdom of France.After a period of growing power within France, it was divided when its western districts fell under French rule in the late 12th century, with the remaining parts of Flanders came under the rule of the counts of neighbouring Hainaut in 1191.
Map of Maastricht, Netherlands Map of Liège, Belgium. The Ferraris map or map of the Austrian Netherlands is a historical map created between 1770 and 1778 by Count Joseph de Ferraris and includes 275 sheets [1] published at the original scale of 1/11.5. The map was made in response to a request by Prince Charles Alexander of Lorraine.