SIS SS-ISO 8529-1990 Neutron reference radiations for calibrating neutron-measuring devices used for radia- tion protection purposes and for determining their response as a functio.pdf

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ITU-R RAPPORT M 766-2 FRENCH-1990 Feasibility of frequency sharing between the GPS and other services《全球定位系统和其他服务之间的频率共享的可行性》.pdf

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