00596nam a2200181 a 4500 20231129120843.0 150911s19uu xx 00 eng d 9780545290081 HSLRC HSLRC HSLRC Blackwood, Gary 9867 Mysterious messages: a history of codes and ciphers / Gary Blackwood New York : Scholastic, c2009. 170pages. ; 18cm. 1150 9 Jason Henry. 40825 lcc BK 75197 75197 0 0 lcc 0 0 HSLRC HSLRC SRC 2023-10-05 3 LEX1150 B632 2009 LEX0077 2025-09-03 00:00:00 2025-08-20 1 2023-10-05 BK 0 0 lcc 0 0 HSLRC HSLRC SRC 2023-11-29 1 LEX1150 B632 2009 LEX0078 2025-05-26 00:00:00 2023-11-29 2 2023-11-29 BK 0 0 lcc 0 0 HSLRC HSLRC SRC 2024-02-27 2 LEX 1150 c.1 LEX0075 2026-07-23 18:37:21 2024-11-26 3 2024-02-27 BK