. . "Geschichte." . . "Aussterben." . . "Paläontologie." . . "Hypothese." . . "Geowissenschaften Geschichte 20. Jh." . . "Evolució" . . "Bedreigde soorten." . . "Paleontologia - Metodologia." . . "Paleontologia Metodologia." . "Paléontologie Méthodologie." . . "Animals extints" . . "Geologie Geschichte 20. Jh." . . . . "The mass-extinction debates : how science works in a crisis" . . "The mass-extinction debates : how science works in a crisis ; [The Mass-Extinction Debates, July 12, 1991, Biannual Meeting of the International Society for the History, Philosophy, and Social Studies of Biology, Northwestern University]" . . "The mass-extinction debates how science works in a crisis" . "The Mass-extinction debates: how science works in a crisis" . . . . . . . . . . . . . . . . . . "The Mass-extinction debates : how science works in a crisis" . . . . . "The mass-extinction debates: how science works in a crisis" . . . . . . . . . . . . . . . . "Espèces (biologie) Extinction." . . "Paleontology." . . "Mass-Extinction Debates (1991.07.12)" . . . "Evolutie." . . "Massenaussterben." . . "1980-1991" . . "Extinció (Biologia)" . . "Extinction (Biology)" . . "Extinción (Biología)" . . "Specie - Estinzione." . .