[Counting chamber with double Neubauer ruling] [realia] : 6464.

ArchivalResource

[Counting chamber with double Neubauer ruling] [realia] : 6464.

1 counting chamber : glass ; 7.5 x 3.3 x 1 cm.

Related Entities

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Spencer Lens Company

http://n2t.net/ark:/99166/w68966zq (corporateBody)