Griffin, Gwyn. <br/><br/>
Ley de guerra 
Gwyn Griffin ; traducción de Baldomero Porta. 
 - Barcelona  Editorial Bruguera  c1968. 
 - 448 p. 
<br/><br/> Translation of : An operational necessity. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War--Naval operations--Submarine--Fiction.