Share this postIserotope Extras - Issue #16articleclub.substack.comCopy linkFacebookEmailNoteOtherIserotope Extras - Issue #16Mark IseroOct 29, 2015∙ PaidShare this postIserotope Extras - Issue #16articleclub.substack.comCopy linkFacebookEmailNoteOtherShareThis post is for paid subscribersSubscribeAlready a paid subscriber? Sign in