[en] Syria, Lebanon, and Jordan Britannica Educational Publishing
[en] The Emergence of Modern Europe Britannica Educational Publishing
[en] Modern Philosophy Britannica Educational Publishing
[en] Medicine and Healers Through History Britannica Educational Publishing
[en] The Milky Way and Beyond Britannica Educational Publishing
[en] Infectious Diseases Britannica Educational Publishing
[en] Hockey and Its Greatest Players Britannica Educational Publishing
[en] [Living Earth 01] • Forests and Grasslands Encyclopaedia Britannica
[en] [Living Earth 01] • Climate and Climate Change Encyclopaedia Britannica
[en] Plate Tectonics, Volcanoes, and Earthquakes Encyclopaedia Britannica
[en] The Paleozoic Era Encyclopaedia Britannica
[en] Glaciers, Sea Ice, and Ice Formation Encyclopaedia Britannica
[en] [Living Earth 01] • Lakes and Wetlands Encyclopaedia Britannica
[en] [Living Earth 01] • Deserts and Steppes Encyclopaedia Britannica
[en] [Living Earth 01] • Biomes and Ecosystems Encyclopaedia Britannica
[en] Substance Use and Abuse Encyclopaedia Britannica
[en] New Thinking About Genetics Encyclopaedia Britannica