LIBROS EN OpenStax:

• Biología (nivel preuniversitario) (Biology for AP courses - High School): https://openstax.org/books/biology-ap-courses/pages/1-introduction
• Conceptos de biología: https://openstax.org/books/concepts-biology/pages/1-introduction
• Biología 2e: https://openstax.org/books/biology-2e/pages/1-introduction
• Anatomía y fisiología: https://openstax.org/books/anatomy-and-physiology/pages/1-introduction
• Microbiología: https://openstax.org/books/microbiology/pages/1-introduction