"Océanographie." . . . . "The Rhythm of the ages" . . . "The rhythm of the ages" . . . . "The Rhythm of the ages : earth history in the light of the pulsation and polar control theories, by Amadeus W. Grabau" . . . . . . . . "The rhythm of the ages : the pulsation theory, a new aspect of earth history"@en . . . . . . . . . . . . "The rhythm of the ages earth history in the light of the pulsation and polar control theories"@en . "Rhythm of the ages"@en . . . . . . "The Rhythm of the Ages. Earth history in the light of the pulsation and polar control theories"@en . . . "The rhythm of the ages; earth history in the light of the pulsation and polar control theories"@en . . . "Géochronologie." . . "géologie." . .