http://reply.papertrans.cn/1/35/3431/3431-11.png
http://reply.papertrans.cn/1/35/3431/3431-12.png
http://reply.papertrans.cn/1/35/3431/3431-13.png
http://reply.papertrans.cn/1/35/3431/3431-14.png
http://reply.papertrans.cn/1/35/3431/3431-15.png
http://reply.papertrans.cn/1/35/3431/3431-16.png
Submitted on: 16 June 2000.
Revised on: 02 August 2000.
Accepted on: 10 September 2000.
___________________BIOACOUSTICS-THE INTERNATIONAL JOURNAL OF ANIMAL SOUND AND ITS RECORDING
http://reply.papertrans.cn/1/35/3431/3431-18.png
http://reply.papertrans.cn/1/35/3431/3431-19.png
http://reply.papertrans.cn/1/35/3431/3431-20.png