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Nederlandse Bibliografie Totaal (NBT)
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b59614f2bac260ad0a37fc8936c1644e
b59614f2bac260ad0a37fc8936c1644e
https://data.netwerkdigitaalerfgoed.nl/.well-known/genid/b59614f2bac260ad0a37fc8936c1644e
The proper motions of 2088 stars and the motion of the open cluster Messier 67, derived from photographic plates taken by prof. dr. E. Hertzsprung at the Potsdam Observatory / measured and discussed by P.J. van Rhijn
publication
b59614f2bac260ad0a37fc8936c1644e
https://data.netwerkdigitaalerfgoed.nl/.well-known/genid/b59614f2bac260ad0a37fc8936c1644e
location
22444ce997f19d139368e952418c5caf
organizer
fc752c236bb830817a9cfddd169488a2
startDate
1922
http://www.w3.org/2001/XMLSchema#gYear