00290nam a22001217a 4500003000400000005001700004008004100021040000700062050002100069100001400090245003300104260003100137OSt20170222113333.0170222b        xxu||||| |||| 00| 0 eng d  cRU  aD21.1b.K43 1991  aJohn Keay  aHistory of world exploration  aLondonbMalard pressc1991