x  x  <br/><br/>
Instruction manual for oceanorgraphic observations.   x 

 - 2nd ed.  
 - U. S.   Hydrographic Office   1955  
 - ix, 210p.  
<br/><br/>Includes 
<br/><br/><label>ISBN: </label>x      
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oceanography  Oceanography  
<br/><br/><label>Dewey Class. No.: </label>551.46/INS(2)