ISBN 9781241503635 books & textbook
The World's Great Explorers and Explorations. Edited by J. S. Keltie, H. J. Mackinder. and E. G. Ravenstein.
Keltie Sir, John Scott Mackinder, Halford John Ravenstein, Ernst Georg
British Library, Historical Print Editions /2011-03-01 Paperback / 414 Pages
isbn-10: 124150363X / isbn-13: 9781241503635
