Missing Dewey Classification.

[TobiasNx]

was: http://aleph.lobid.org/resources/HT007216566#!

is: http://lobid.org/resources/990056283990206441#!

It seems that this is due to the classification change, sdnb is not mapped as Dewey.
I am not sure why, but sdnb in 084 seems not to be the same as dewey classification in 082.

[TobiasNx]

I have done a first change giving labels to DDC Sachgruppen of DNB and ZDB in #1850, since DDC Sachgruppen of DNB and ZDB are not fully identical to DDC. They are a DDC based own systematic.

But we could additionally add all DDC-Sachgruppen to the Dewey Subjects as we handled it before in ALEPH. What do you think @acka47 .

[TobiasNx]

I added DNB Sachgruppen and DDC Sachgruppen der ZDB. I also talked to @acka47 to add all of them also as "normal" DDC.

@acka47 I am not very pleased with the id that I used for DNB Sachgruppen and DDC Sachgruppen der DDC. Do you have better suggestions?

[TobiasNx]

There is now sswd = > seems to be a GND Notation.
Otherwise looks good closing: http://aleph.lobid.org/resources/HT007216566#