Share this postIserotope Extras - Issue #42articleclub.substack.comCopy linkFacebookEmailNoteOtherIserotope Extras - Issue #42Mark IseroMay 19, 2016∙ PaidShare this postIserotope Extras - Issue #42articleclub.substack.comCopy linkFacebookEmailNoteOtherShareThis post is for paid subscribersSubscribeAlready a paid subscriber? Sign in