[Koha] How can I export koha bibliography into csv file (or excel)

Our university authority need each department to report books in excel format. Is there a neat way to generate a excel spreadsheet containing the required MARC fields? Thanks in advance! -- Xu Benda Fundamental Science of Mathematics and Physics, Tsinghua University, Beijing, P.R.China, 100084 tel:86-10-51531861 http://learn.tsinghua.edu.cn:8080/2005012177