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During my 40 years of teaching biology in secondary schools, I have led or taken part in more than 150 school trips. Most were biological but a few have involved other subjects, including geography...
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Stored only when both papers are in the corpus — 6 citations exist upstream.
Papers that cite the same references — the relational fallback while embeddings are still backfilling.
Imported from OpenAlex (CC0) — nothing here is generated.