http://www.iupac.org/publications/pac/2003/pdf/7511x2013.pdfThere is a drawn image here, scroll down a bit...don’t know if it will help. The drawing look a bit primitive to me. But thats all I found so far.
http://www.iupac.org/publications/pac/2003/pdf/7511x2013.pdf
There is a drawn image here, scroll down a bit...don’t know if it will help. The drawing look a bit primitive to me. But thats all I found so far.