Ghosh, AshimSengupta, Dhurjati Prasad2013-07-122013-07-121988Indian Juornal of Earth Sciences, v 15, no 2, p 154-159http://hdl.handle.net/10263/5534enUse of venn diagramQuantitative stratigraphic studyQuantitative stratigraphyStratigraphic studyUse of venn diagram in quantitative stratigraphic studyArticle