Ehrlich, P.R. Harriman, R.L. How to be a survivor: a plan to save spaceship earth - Pan/Ballantine London 1971 - 176 - Population growth Environmental deterioration ISBN: 345-02125-8 = Ehrlich, P.R. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 0338 Nat. Bib. Agency Control No.: 577.4 EHR Subjects--Topical Terms: Environmental Sciences Universal Decimal Class. No.: 577.4