In copyright
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Credit
Correspondence between Pontecorvo and Professor Philip MacDonald Sheppard discussing Pontecorvo's reprints and research on the nature of the white eye locus in Drosophila and his studies into crossing over between alleles. In copyright. Source: Wellcome Collection.
Provider
The original material is held at <a href="http://www.gla.ac.uk/services/archives/" rel="nofollow">Glasgow University Archive Services.</a> This catalogue is held by the Wellcome Library as part of Codebreakers: Makers of Modern Genetics.