00279nam a2200097Ia 4500008004100000082002000041100001300061245007300074260002700147300000700174140113s9999    xx            000 0 und d  a339.5(410)   L2  aH.M.S.O.  aSinews for survival- A report on the management of natural resources  a1972bH.M.S.O.cLondon  a74