F L Whipple1. Show Affiliations » 1. Harvard College Observatory.
Abstract
Year: 1951 PMID: 16588986 PMCID: PMC1063293 DOI: 10.1073/pnas.37.1.19
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205