Program: HathiTrust Digital Library

  • Publisher: [The Observatory?]
  • Print ISSN: 1061-6853
  • Electronic ISSN:
  • OCLC Number: 13872792
  • Validation: None
  • Retention: permanent
  • Institution: HathiTrust
  • Facility:
  • OCLC Symbol: HATHI
  • Holdings Format: Print
Materials Archive Action Date of Action Program Status/Note
v.1 yr.1915; v.1 1915; c.1 v.1 1915; v.1 1916; v.2 1925; v.3 1935; v.4 1943; v.5 1943-1947; v.5 1948; v.6-7 1946-1958; v.6-7 1949-58
committed to retain 2021-01-01 HTDL