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Practical Guide for Compensation of Compasses Without Bearings (Classic Reprint)/en-ca/practical-guide-for-compensation-of-compasses-without-bearings-classic-reprint/2379A6EF-30F7-49F0-9477-C666F5F59182.html2379A6EF-30F7-49F0-9477-C666F5F59182
Practical Guide for Compensation of Compasses Without Bearings