"The Sextant handbook : adjustment, repair, use and history"@en . . . . . . "The Sextant handbook : adjustment, repair, use, and history" . "The sextant handbook adjustment, repair, use, and history"@en . "The sextant handbook : adjustment, repair, use and history"@en . "The sextant handbook : adjustment, repair, use and history" . . . . "The sextant handbook : adjustment, repair, use, and history" . . . "The sextant handbook : adjustment, repair, use, and history"@en . . . . . . . . . . . . "The sextant handbook : adjustment, repair, use and history by Bruce A. Bauer"@en . . . "The sextant handbook" . . . "The sextant handbook : Adjustment, repair, use and history" . . "Sekstant." . . . . "Sextants." . . "Sextant." . .