CLC/TR 50442 [documento electrónico] : guidelines for product committees on the preparation of standards related to human exposure from electromagnetic fields / European Committee for Electrotechnical Standardization
Análise psicológica / Instituto Superior de Psicologia Aplicada
EN 14534 [documento electrónico] : postal services: quality of service: measurement of the transit time of end-to-end services for bulk mail / European Committee for Standardization
Postal services [documento electrónico] : mail item processing: optical characteristics for processing letters: EN 13619: November 2002 / European Committee for Standardization
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