http://reply.papertrans.cn/3/289/28868/28868-21.png
http://reply.papertrans.cn/3/289/28868/28868-22.png
http://reply.papertrans.cn/3/289/28868/28868-23.png
http://reply.papertrans.cn/3/289/28868/28868-24.png
http://reply.papertrans.cn/3/289/28868/28868-25.png
http://reply.papertrans.cn/3/289/28868/28868-26.png
Submitted on: 02 November 2008.
Revised on: 26 November 2008.
Accepted on: 19 December 2008.
STUDIES IN CONSERVATION
http://reply.papertrans.cn/3/289/28868/28868-28.png
http://reply.papertrans.cn/3/289/28868/28868-29.png
Submitted on: 20 May 2020.
Revised on: 08 June 2020.
Accepted on: 03 July 2020.
STUDIES IN CONSERVATION