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Search terms entered in the Keywords field are combined with the operator ET by default.

The search terms entered in the Phrase field are treated as a phrase. To search for more than one phrase, place quote marks around each phrase. The phrases are combined with the operator ET by default.
The number entered in the 0 field indicates how many words may separate the terms in the phrase.

The Keywords and Phrase fields are combined with the operator AND by default.
The following search operators may also be used in these two fields: +, -, " ".

Combined with

Es stehen die folgenden Suchoperatoren zur Verfügung: +, -, AND, OR, NOT, " ", ?, *, ~, ^.

Geben Sie einen oder mehrere Begriffe in das Feld ein, in Gross- oder Kleinschrift.
Um die Suche zu starten, klicken Sie auf Suchen oder drücken Sie die Enter-Taste.

Search filters

You can restrict your search using the following filters:

- Language of publication
- Years of publication

Search with Dewey Code

The subject groups under the Dewey Code allow you to restrict your search by subject.

Click on one or more subject groups in the list on the left, then click on the arrow to add them to the search list on the right.