Thomsen, Helge. <br/><br/>
Hydrographical observations made during the "Dana"-expedition 1928-30 / 
with an introduction by Helge Thomsen. 
 - Copenhagen :  C.A Reitzels Forlag,  1937. 
 - 46 p. ;  32 cm. 
 - Carlsberg foundation. Dana-Report ;  no. 12 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrographic surveying.<br/>Oceanography.<br/>Voyages around the world.<br/>Dana (Ship).<br/>Marine biology.