Nautical Institute Admiralty manual of navigation. Volume 2, Astro navigation/ Nautical Institute. - 10th ed. - London : Nautical Institute 2011 - vi, 1 v. (various pagings) : ill 30cm. ISBN: 9781906915308 LC Class. No.: VK 555 .A3 2011 Dewey Class. No.: VK 555 .A3 2011 National Library of Medicine Call No.: VK 555 .A3 2011