anchor: THE VIEWS EXPRESSED IN THIS PAPER ARE THOSE OF THE AUTHORS AND DO NOT NECESSARILY REPRESENT THE OPINIONS OF THE POSTAL RATE COMMISSION OR THE ENVIRONMENTAL PROTECTION AGENCY.
positive: The views expressed in this paper are not of those in the Postal Rate Commision or the Environmental Protection Agency, only those of the paper's authors.
negative: The views expressed in this paper are those of the Enviromental Protection Agency.