00299nam a2200109Ia 4500082002000000100003500020245006500055260002600120300001000146500000500156700002800161  a574.52bW256.OO  aWard, Barbara, and Dubos, Bene  aOnly one earth; the care and maintenance of a small planetb  aLondonbDeutschc1972  a304p.  a  aDubos, Bene ; jt. auth.