Reference health
Natural resources and an optimum human population
23/23 checkable references clean · checked 2026-09-03
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
78 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 23 checked references that resolve
resolves10.1016/B978-0-12-556555-4.50008-9
Availability of Agricultural Land for Crop and Livestock Production
resolves10.1093/bioscience/36.9.599
AIBS News: Cultural carrying capacity: a biological approach to human problems
resolves10.1016/B978-0-12-556555-4.50009-0
Land Degradation and Its Impact on Food and Other Resources
resolves10.1007/BF00138852
Impacts of carbon dioxide warming on climate and man in the semi-arid tropics
resolves10.1016/0921-8181(90)90047-G
Mass extinctions: what can the past tell us about the present and the future?
resolves10.1007/BF02014477
Environmental and social implications of waste in U.S. agriculture and food sectors
resolves10.1016/B978-0-12-556555-4.50016-8
Ecological Resource Management for a Productive, Sustainable Agriculture
resolves10.1016/0921-8009(94)90078-7
Achieving a secure energy future: environmental and economic issues
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