Hobden, Heather, <br/><br/>
John Harrison and the problem of longitude / 
Heather and Mervyn Hobden. 
 - 6th edition. 
 - 53 pages :  illustrations, facsimiles, 1 map, portraits ;  30 cm 
<br/><br/> Previous edition: 1995. 
<br/><br/><label>ISBN: </label>1871443245 9781871443240 
<br/><br/><label>Nat. Bib. No.: </label>GB9877301  bnb 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>008152716  Uk 
<br/><br/><label>Subjects--Personal Names: </label><br/>Harrison, John, 1693-1776. <br/>Harrison, John, 1693-1776. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chronometers--History.<br/>Longitude--Measurement--History.<br/>Chronometers.<br/>Longitude--Measurement.
<br/><br/><label>Subjects--Index Terms: </label>biography pupular Cosmic Elk Hobden, Heather and Mervyn Marine Chronometer Harrison longitude 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>History.