ISBN-13: 9780231036085 / Angielski / Twarda / 1973 / 197 str.
Are bacteriophage T4 and the long-nosed elephant fish valuable in their own right? Agar defends an affirmative answer to this question by arguing that anything living is intrinsically valuable. The result is a challenge to prevailing definitions of value and a call for a scientifically-informed appreciation of nature.