1957/08/01 by W. W. Morgan, N. U. Mayall · 8 citations
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research
paper · doi:10.1086/127075
crossref issued 1957/08/01 · crossref published 1957/08/01 · crossref published-print 1957/08/01 · openalex publication_date 1957/08/01 · crossref created 2002/07/26 · crossref deposited 2018/03/07 · openalex created_date 2025/10/10 · crossref indexed 2026/04/01 · openalex updated_date 2026/06/11