Notebook containing part of 'The genetical theory of populations' by J B S Haldane, described as 'continued' and consisting of some unnumbered chapters., [?1950.], MS.20615. Correspondence, papers and notebooks of J B S Haldane and correspondence and papers of his second wife Helen, née Spurway., MSS.20534-20654. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/44330 Accessed September 25, 2024.