?url_ver=Z39.88-2004&rft_id=10.1016%2FB978-0-12-419968-2.00001-7&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=M.&rft.au=Ramkumar%2C+M.&rft.aulast=Ramkumar&rft.btitle=Toward+Standardization+of+Terminologies+and+Recognition+of+Chemostratigraphy+as+a+Formal+Stratigraphic+Method&rft.date=2015&rft.isbn=9780124199828%3B+9780124199682&rft.genre=book