Hobbs, Richard R. <br/><br/>
Marine navigation / 
Richard R. Hobbs. 
 - 2nd ed. 
 - Annapolis, Md. :  Naval Institute Press,  c1981. 
 - 2 v. :  ill. (some col.) ;  27 cm. +  hbk. 
 - Fundamentals of naval science series .
<br/><br/> Erratum slip inserted. 
<br/><br/>Includes indexes. 
<br/><br/>Vol. 1 Piloting -- Vol. 2 Celestial and electronic. 
<br/><br/><label>ISBN: </label>087021358X (v. 1) 0870213636 (v. 2) 
<br/><br/><label>LCCN: </label>81009538 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navigation<br/>Pilots and pilotage<br/>Nautical astronomy<br/>Electronics in navigation.
<br/><br/><label>Dewey Class. No.: </label>623.89