Antzeko izenburuak

• Progressive agriculture in Arizona
  Argitaratua: 1949
  ISSN: 0033-0744
• Texas agricultural progress
  Argitaratua: 1955
  ISSN: 0049-349X
• Progressive
  Argitaratua: 1936
  ISSN: 0033-0736
• Annual Progress Report on Agricultural Research and Experimentation
  ISSN: 0384-8884
• Anesthesia Progress
  Argitaratua: 1966
  ISSN: 0003-3006