instrumento para resumir e indizar

(n.) = abstracting and indexing tool

Ex. Prior to the 1970s UDC was frequently to be found in large card indexes in special libraries and sometimes to be encountered in abstracting and indexing tools.

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(n.) = abstracting and indexing tool

Ex: Prior to the 1970s UDC was frequently to be found in large card indexes in special libraries and sometimes to be encountered in abstracting and indexing tools.