. . "Kummer, H. (Hans)" . "Hans KUMMER" . "writer on comparative psychology Hans Kummer" . . "Zoologiste, Ethologiste, Suisse Hans Kummer" . . "Kummer, Hans, writer on comparative psychology" . . "Zoologe, Ethologe, Schweiz Hans Kummer" . "Hans"@en . "H. Kummer" . "Kummer, Hans Zoologist, Ethologist, Switzerland" . . "Kummer, Hans Zoologe, Ethologe, Schweiz" . "H." . "H. Kummer" . "Kummer"@en . "KUMMER" . "Hans Kummer"@en . "Kummer"@fr-FR . . "Hans Kummer" . . . "1930-11-04" . . . "Kummer, Hans Zoologiste, Ethologiste, Suisse" . "Zoologist, Ethologist, Switzerland Hans Kummer" . "2013" . . . .