Trends in patent filing activities in the EEC : a contribution to the study and assessment of the technological trends developing in the EEC from 1969 to 1980, based on a statistical analysis of patents / H. Grevink, H. Kronz.

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Grevink, H.

Works from the collections

Trends in patent filing activities in the EEC : a contribution to the study and assessment of the technological trends developing in the EEC from 1969 to 1980, based on a statistical analysis of patents / H. Grevink, H. Kronz.