N.V. Hollandsche Signaalapparaten. "Reporter" and "RBS70" a low level air defence solution N.V. Hollandsche Signaalapparaten. "Reporter" …..an indispencible aid in air defence Passive air defence : parts I and II : issued by headquarters 21 army group jane's yearbooks Jane's land-based air defence / ed. by Tony Cullen, Christopher F. Foss Deci': air defence boven Middellandse Zee / door Joris Janssen Lok
