http://reply.papertrans.cn/2/179/17816/17816-11.png
http://reply.papertrans.cn/2/179/17816/17816-12.png
http://reply.papertrans.cn/2/179/17816/17816-13.png
http://reply.papertrans.cn/2/179/17816/17816-14.png
http://reply.papertrans.cn/2/179/17816/17816-15.png
http://reply.papertrans.cn/2/179/17816/17816-16.png
Submitted on: 01 February 2001.
Revised on: 05 April 2001.
Accepted on: 08 May 2001.
___________________Journal of Maps---TAYLOR & FRANCIS LTD
http://reply.papertrans.cn/2/179/17816/17816-18.png
http://reply.papertrans.cn/2/179/17816/17816-19.png
Submitted on: 01 February 2003.
Revised on: 01 March 2003.
Accepted on: 12 April 2003.
___________________Journal of Maps---TAYLOR & FRANCIS LTD