. "Writer on Biology Hans KROOK" . "http://www.wikidata.org/entity/Q6581097" . . . . . . . "2004-09-10" . "KROOK" . "Writer on Topography Hans KROOK" . . . "1920-05-10" . "KROOK, Hans, Writer on Biology" . "Hans"@en . "Hans Krook"@en . "Krook"@fr-FR . . . . "Krook"@en . "KROOK, Hans, Writer on Topography" . . . .