Instrument. [HARDY'S Tertienuhr umgekehrtes Pendel]
Astronomische Abhandlungen Bd. 6, GDML_Books, (1874), p. 435 / Harvested from
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@article{PPN236007467+dmdlog171,
     title = {Instrument. [HARDY'S Tertienuhr umgekehrtes Pendel]},
     booktitle = {Astronomische Abhandlungen Bd. 6},
     series = {GDML\_Books},
     year = {1874},
     pages = {435},
     url = {http://dml.mathdoc.fr/item/PPN236007467+dmdlog171}
}

 (éd.). Instrument. [HARDY'S Tertienuhr umgekehrtes Pendel], dans Astronomische Abhandlungen Bd. 6, GDML_Books,  (1874), p. 435. http://gdmltest.u-ga.fr/item/PPN236007467+dmdlog171/