To retain texts in reasonably wide circulation and focus on college-level introductions, the authors selected multiple-edition texts and removed high-school textbooks; this reduced 638 texts to 42.

Evidence (1)

Respond to this claim on Isonomia

Build or challenge arguments with structured reasoning in the Digital Agora.

Embed this claim

<iframe
  src="https://www.isonomia.app/embed/claim/535668730222713605f5f9695afd7b3226e94d75de3f50a1a03da2e91d5321f9"
  width="600"
  height="280"
  frameborder="0"
  style="border: 1px solid #e5e7eb; border-radius: 8px;"
  title="Isonomia Claim"
  loading="lazy"
></iframe>

Copy and paste into any website or forum that supports HTML.