$a Academia Groningana 29 juni-1 juli 1914. - Groningen, 1916.
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$a LCA online
670
$a The astronomical instruments (1618) and Catalogus librorum (1646) of Nicolaus Mulerius, with an essay on his place in the history of science / Henk Kubbinga. - Groningen, 2014. $b S. tyt.: (Groningen University Press)