00000nam##2200000za#4500 9.611342 CaOODSP 20210806100014 ta 150406|1993||||xxc||||| f|0| 0 eng|d 0-660-15622-9 CaOODSP eng n-cn--- YM32-2/343E The Communications Security Establishment: Canada's most secret intelligence agency / by Philip Rosen, Senior Analyst. Ottawa - Ontario : Library of Parliament. 1993. 15p. : references ; 28 cm. Background papers BP-343E Softcover 94-42 1994-10-21 Security intelligence gcpds Canada. Library of Parliament. Research Branch. Rosen, Philip The Communications Security Establishment, Canada's most secret intelligence agency / (CaOODSP)9.561424 Background papers ; BP-343E (CaOODSP)9.514933