http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nicholls's concise guide to the Ministry of Transport navigation examinations
Nicholls's concise guide to the navigation examinations for mate, master and extra master
Ministry of Transport and Civil Aviation.
2 volumes : illustrations, charts (some folded, 9 in pockets) diagrams ; 25 cm
Vol. 2 revised in 1968 has title: Nicholls's concise guide to the navigation examinations for mate, master and extra master.