麻烦查找以下文献,文献有点老,谢谢! 【序号】:1 【作者】:Paul Burchill, Alan A. Herod, Judith P. Mahon, Ernest Pritchard 【题名】:Comparison of methods for the isolation of basic nitrogen compounds from coal tars 【期刊】:Journal of Chromatography A 【年、卷、期、起止页码】:1983, Volume 265, Pages 223-238