H Shapley1. Show Affiliations » 1. Harvard College Observatory, Cambridge, Mass.
Abstract
Year: 1933 PMID: 16587792 PMCID: PMC1086097 DOI: 10.1073/pnas.19.6.591
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205