Darwin, John, <br/><br/>
Unlocking the world :  port cities and globalization in the age of steam, 1830-1930 / 
John Darwin. 
 - UK [London] :  Penguin Books,  2020. 
 - xxxviii, 454 pages :  illustrations, maps ;  24 cm 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781846140877 1846140862 
<br/><br/><label>LCCN: </label>2020445769 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Port cities--History.<br/>Globalization.<br/>Steam-engines.
<br/><br/><label>LC Class. No.: </label>HE551  / .D37 2020 
<br/><br/><label>Dewey Class. No.: </label>387.1  / D228