http://reply.papertrans.cn/3/258/25750/25750-21.png
http://reply.papertrans.cn/3/258/25750/25750-22.png
http://reply.papertrans.cn/3/258/25750/25750-23.png
Submitted on: 28 August 2003.
Revised on: 15 September 2003.
Accepted on: 05 October 2003.
PTERIDINES
http://reply.papertrans.cn/3/258/25750/25750-25.png
Submitted on: 25 August 2013.
Revised on: 21 September 2013.
Accepted on: 12 October 2013.
PTERIDINES---DE GRUYTER POLAND SP Z O O
http://reply.papertrans.cn/3/258/25750/25750-27.png
http://reply.papertrans.cn/3/258/25750/25750-28.png
http://reply.papertrans.cn/3/258/25750/25750-29.png
Submitted on: 23 May 2012.
Revised on: 05 June 2012.
Accepted on: 11 June 2012.
PTERIDINES