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Submitted on: 03 June 2017.
Revised on: 11 July 2017.
Accepted on: 14 August 2017.
___________________JOURNAL OF ECONOMIC GEOGRAPHY---OXFORD UNIV PRESS
Submitted on: 13 August 2005.
Revised on: 01 November 2005.
Accepted on: 20 November 2005.
___________________JOURNAL OF ECONOMIC GEOGRAPHY---OXFORD UNIV PRESS
Submitted on: 07 October 1998.
Revised on: 03 November 1998.
Accepted on: 02 December 1998.
___________________JOURNAL OF ECONOMIC GEOGRAPHY---OXFORD UNIV PRESS