[Making out invoices with the help of punch cards].
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Drug Industry↗
Biomedical subjects
C O ROSEN
Publications and source records attributed to C O ROSEN.
[Necessity of statistical records].
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Humans↗
[Stock inventory in pharmacies].
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Humans↗
[Role of galenic pharmacy].
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Pharmaceutical Services↗
[Two gratifying events].
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Education, Pharmacy↗
[Comments on the Danish drug industrial survey].
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Data Collection↗