"Aptérygotes." . . "Insects." . . "Artrópodos." . . "Arthropodes." . . "Protoures." . . "Insecta (Sistematica Ordens Menores)" . . "The protura : A revision on the species of the world with keys for determination" . "The protura a revision of the species of the world, with keys for determination"@en . . "The protura : a revision of the species of the world, with keys for determination" . . "The Protura : a revision of the species of the world with keys for determination" . . "The Protura : a revision of the species of the world with keys for determination"@en . . . . . . . . "The Protura : A revision of the species of the world with keys for determination" . . . . . . "The Protura. A revision of the species of the world with keys for determination. [With illustrations.]"@en . . . . "The protura : a revision of the species of the word with keys for determination" . . "The protura; a revision of the species of the world, with keys for determination" . . . . . "The protura : a revision of the species of the world with keys for determination" . . . . "Protura" . "Protura." . . . .