Spectrum management and engineering / ed. Fredrick Matos
Nouvelles technologies et changement social : les télécommunications / Commission des Communautés Européennes
An efficient and accurate method for calculating and representing power density in the near-zone of microwave antennas : NBSIR report No. 85-3036 / Richard L. Lewis and Allen C. Newell
Catálogo de inteiros postais portugueses / José da Cunha Lamas, A. H. de Oliveira Marques