Gaskell, Thomas Frohock. <br/><br/>
Under the deep oceans  twentieth century voyages of discovery. 

 - New York  Norton  [1960] 
 - 239 p.  illus.  22 cm. 
<br/><br/><label>LCCN: </label>60012024 /L/r84 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Challenger (Steamship)
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ocean bottom<br/>Deep-sea sounding.
<br/><br/><label>LC Class. No.: </label>GC57  / .G3 
<br/><br/><label>Dewey Class. No.: </label>551.4608