Cambridge, England, UK: Cambridge University Press "Chimborazo and the old kilogram"
New York: Cambridge University Press "Clergy views on evolution, creationism, science, and religion"

Washington, DC: American Geophysical Union.

سطح الأرض
"A model for the evolution of strontium and lead isotopes in a dynamic earth"
قانون حجم الكرة بالتفصيل
The Age of the Earth
كم عدد سكان العالم 2021؟ .. الترتيب العالمي للكثافة السكانية
Shayler, David; Vis, Bert 2005
Symbols -- Encyclopedia of Western Signs and Ideograms "Uprooting the tree of life"
Secretariat of the Convention on Biological Diversity Journal of Research in Science Teaching

Life, the Science of Biology: The Science of Biology.

العالم من حولي
Times Books, Henry Holt and Company
قانون حجم الكرة بالتفصيل
Purves, William Kirkwood; Sadava, David; Orians, Gordon H
كم تبلغ مساحة الأرض
Contributions to Mineralogy and Petrology
at the , , Washington D Explanatory Supplement to the Astronomical Almanac
International Earth Rotation and Reference Systems Service IERS Late Proterozoic low-latitude global glaciation: the Snowball Earth

Scripps Institution of Oceanography Archives.

University of California, San Diego
توزيع المياه على الأرض
Monthly Notices of the Royal Astronomical Society
كم تبلغ مساحة الكرة الأرضية
Japan Agency for Marine-Earth Science and Technology JAMSTEC