[Counting chamber with double Neubauer ruling] [realia] : 6464.
Related Entities
There are 1 Entities related to this resource.
Spencer Lens Company
http://n2t.net/ark:/99166/w68966zq (corporateBody)
There are 1 Entities related to this resource.
http://n2t.net/ark:/99166/w68966zq (corporateBody)