"Naturschutz Länder, Gebiete, Völker // Serengeti." . . . . "impala." . . "Impala." . "Verhaltensforschung." . . . . . . . . . . . . . . . "Impala social behaviour : territory, hierarchy, mating, and the use of space" . . . . . . "Impala social behaviour : territory, hierarchy, mating, and the use of Space" . . . . . "Impala social behaviour territory, hierarchy, mating, and the use of space" . . . . . "Impala social behaviour : territory, hierarchy, mating and the use of space" . "Aepyceros melampus." . . "Serengeti Pflanzenwelt, Tierwelt." . . "Impala Moeurs et comportement." . . "Comportement social des animaux." . . "Sozialverhalten." . . "Impala Comportamento Studi." . . "Naturschutzgebiet." . . "Serengeti." . .