resultaten van 35 jaar ruimtevaart / met bijdragen van N. Bunnik ... [et al.] ; eindred.: Govert Schilling electrical and mechanical engineering regulations Wireless set No. 18, MKS I, II and III : General description electrical and mechanical engineering regulations Repeater, telephone, 2-circuit : General description electrical and mechanical engineering regulations Repeater, telephone, 2-circuit : First Echelon Work electrical and mechanical engineering regulations Wireless set No. 18 : Modification instructions index
