The link "https://www.apidologie.org/articles/apido/pdf/1999/03/ Apidologie_0044-8435_1999_30_4_ART0004.pdf" did not give any Oxalic info but at the same site https://www.apidologie.org/component/solr/?task=results#!q=oxalic&sort=relevance&rows=10 This gave links to a few articles of interest. *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html