J.F.W. HERSCHEL and James SOUTH: Observations of 380 double stars, made in the years 1821, 1822 and 1823. London
Astronomische Abhandlungen Bd. 6, GDML_Books, (1874), p. 642 / Harvested from
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@article{PPN236007467+dmdlog305,
     title = {J.F.W. HERSCHEL and James SOUTH: Observations of 380 double stars, made in the years 1821, 1822 and 1823.  London},
     booktitle = {Astronomische Abhandlungen Bd. 6},
     series = {GDML\_Books},
     year = {1874},
     pages = {642},
     url = {http://dml.mathdoc.fr/item/PPN236007467+dmdlog305}
}

 (éd.). J.F.W. HERSCHEL and James SOUTH: Observations of 380 double stars, made in the years 1821, 1822 and 1823.  London, dans Astronomische Abhandlungen Bd. 6, GDML_Books,  (1874), p. 642. http://gdmltest.u-ga.fr/item/PPN236007467+dmdlog305/