Robuta

https://collections.nlm.nih.gov/catalog/nlm:nlmuid-101584906X6622-doc Letter from K. V. Kossikov to Joshua Lederberg - Digital Collections - National Library of Medicine https://collections.nlm.nih.gov/catalog/nlm:nlmuid-101584906X6620-doc Letter from K. V. Kossikov to Joshua Lederberg - Digital Collections - National Library of Medicine