https://www.ipni.org/a/4251-1
Hutchison, Paul Clifford | International Plant Names Index
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https://cliffordschool.org/
Home - Clifford International School
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https://www.ischooladvisor.com/china/guangdong/guangzhou/clifford-international-school
Clifford International School in Guangzhou | Reviews and Prices 2026
May 1, 2026 - Clifford International School is a Private School located at Clifford School, Clifford Estates, Panyu, Guangzhou.
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https://www.simak-bibliography.com/details.php?edition=3689&lang=all&country=all&thumbs=yes&order=date&filter=all&ul=en
Clifford D. Simak - The International Bibliography - Details
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