Program: HathiTrust Digital Library

  • Publisher: The Observatory
  • Print ISSN:
  • Electronic ISSN:
  • OCLC Number: 11930896
  • Validation: None
  • Retention: permanent
  • Institution: HathiTrust
  • Facility:
  • OCLC Symbol: HATHI
  • Holdings Format: Print
Materials Archive Action Date of Action Program Status/Note
no.1-44; no.45-76 1919-27; no.77-90 1928-33; no.91-100 1934-38; no.101-110 1939-50; no.111-120 1951-61; no.121-130 1962-1970; no.121-131 1962-71; no.131 1971
committed to retain 2023-01-01 HTDL