Cite
APA Citation
GCHQ, (2018). The GCHQ Puzzle Book II.. London : Michael Joseph. http://access.bl.uk/ark:/81055/vdc_100068762490.0x000001
This is an interim version of our Electronic Legal Deposit Catalogue-eJournals and eBooks while we continue to recover from a cyber-attack.
GCHQ, (2018). The GCHQ Puzzle Book II.. London : Michael Joseph. http://access.bl.uk/ark:/81055/vdc_100068762490.0x000001