| Literature DB >> 16591096 |
C Ponnamperuma1, R M Lemmon, R Mariner, M Calvin.
Abstract
Entities:
Year: 1963 PMID: 16591096 PMCID: PMC299966 DOI: 10.1073/pnas.49.5.737
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205