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040			_aEC-UrYT _cEC-UrYT
041			_aeng
082	0	4	_223 _a639.9
100	1		_911701 _aNorton, Bryan G.
245	1	3	_aWhy preserve natural variety? / _cBryan G. Norton.
250			_aFirst Edition
264	3	4	_aNew Jersey : _bPrinceton University Press ; _c1987.
300			_axiii, 281 pages ; _c22 cm.
500			_aStudies in Moral, Political, and Legal Philosophy.
500			_aIncludes index (pages 273-281).
505	2		_aPreface -- One A. Rationale for preserving species: an apology and a taxonomy -- Part A. Demand values and species preservation -- Two. Demand values and economic analysis -- Three. The value of ecosystems and the value of species -- Four. Diversity, stability, and autogenic systems -- Five. Amenity values -- Six. A parting look at demand values -- Part B. Intrinsic value and specie preservation -- Seven. Anthropocentrism -- Eight. Nonanthropocentrism I -- Nine. Nonanthropocentrism II -- Part C. Transformative values and species preservation -- Ten. Transformative values -- Eleven. A coherent rationale for species preservation -- Part D. Triage: The priority issue -- Twelve. Formal and substantive priority systems -- Thirteen. Avoiding triage: An alternative approach to the priorities problem.
650	2	4	_94311 _aBiodiversity conservation
650	2	4	_912505 _aSpecies preservation
650	2	4	_94312 _aConservación de la biodiversidad
650	2	4	_912506 _aPreservación de especies
942			_2ddc _cLIBRO