책 세부 정보
형식
하드커버
페이지
32
언어
영어
출판됨
Feb 28, 2013
출판사
Crabtree Classics
ISBN-10
0778711250
ISBN-13
9780778711254
설명
What if you wanted to send a message that only a few people could understand? That is when you would use secret signs. Readers will be intrigued by the examples of codes and ciphers used by ancient and modern armies, organizations with secret rituals, mysterious designs etched into the ground, symbols of ancient royalty, and stone buildings and statues whose purpose are no longer known.