Saturday, January 12, 2013

JSTOR: The Geographical Journal, Vol. 156, No. 2 (Jul., 1990), pp. 149-157

http://www.jstor.org/discover/10.2307/635322?uid=3738672&uid=2460338335&uid=2460338175&uid=2460337935&uid=2&uid=4&uid=83&uid=63&sid=21101647966107

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