http://reply.papertrans.cn/3/277/27609/27609-31.png
http://reply.papertrans.cn/3/277/27609/27609-32.png
http://reply.papertrans.cn/3/277/27609/27609-33.png
http://reply.papertrans.cn/3/277/27609/27609-34.png
Submitted on: 04 January 1999.
Revised on: 11 February 1999.
Accepted on: 27 February 1999.
SCIENCE AS CULTURE
http://reply.papertrans.cn/3/277/27609/27609-36.png