The Brockhaus supplement is an A-Z one , and by learning how it is said in
german things like "population" , "importations" , "number of war ships"
and the like is possible to get several good data.
Example: The article Algeria starts this way:
"Algerien hatte 1891 4.124.732 Einwohner , darunter 271.101 Franzossen und
47.564 Juden"
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Do not download the Atlas of World Population (Mc Evedy) if not interested in.