J.S. Henslow: Correspondence and botanical lecture notes, GBR/0012/MS Add.8176-8178. Cambridge University Library.

J.S. Henslow: Correspondence and botanical lecture notes, GBR/0012/MS Add.8176-8178. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/resources/7533 Accessed March 25, 2023.