"Astronomy." . . . . "Astronomie Manuels d'enseignement secondaire." . . "Fourteen weeks in descriptive astronomy"@en . "Fourteen weeks in descriptive astronomy" . . . . . . . . "A 14 weeks course in descriptive astronomy"@en . "14 weeks in astronomy"@en . . . . . . . . . . . . "Publishers' advertisements"@en . "Fourteen weeks course in descriptive astronomy"@en . . . . . . "A fourteen weeks course in descriptive astronomy" . "A fourteen weeks course in descriptive astronomy"@en . . . "14 weeks in descriptive astronomy"@en . . . . . . "Fourteen weeks in descriptive astronomy, by J. Dorman Steele" . "A.S. Barnes & Co." . .