Proc Natl Acad Sci U S A. 1939 Dec;25(12):609-16. doi: 10.1073/pnas.25.12.609.
Proceedings of the National Academy of Sciences of the United States of America
R Pearl, W E Moffett
PMID: 16588307 PMCID: PMC1077982 DOI: 10.1073/pnas.25.12.609
[No abstract available.]