00581nam a2200181Ia 4500001001100000005001700011008004300028020002200071020002500093050002200118245009400140260003500234300002400269504005200293650001900345650001900364650001600383000000825020251012174502.0  830113r19771972enk           001 0 eng d  a0140216995 (pbk.)  a9780140216998 (pbk.) 4aHB871b.H347 197710aExploring new ethics for survival :bthe voyage of the spaceship BeaglecGarrett Hardin.   aHarmondsworthbPenguinc1977.   axiv, 273 p.c19 cm.  aIncludes bibliographical references and index.  0aBirth control. 0aHuman ecology. 0aPopulation.