"Astronomy History." . . "Sterrenkunde." . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Herschels and modern astronomy" . . . "The Herschels and modern astronomy By Agnes M. Clerke"@en . . . . . . "Biography" . . . "History"@en . "History" . "The Herschels and Modern Astronomy. [With portraits.]"@en . . . . . . . . . . "The Herschels and modern astronomy" . "The Herschels and modern astronomy"@en . . . "Astronomy." . .