01058nam a2200373 4500 DLU110121521 ##20110519 ##020730s2002 enka b 001 0 eng d 2002510457 GBA2-Z0553 0192803158 (OCoLC)ocm48932608 UKM UKM DLC lccopycat 652.8 PI-F Piper, F. C. (Frederick Charles), 1940- Cryptography : a very short introduction / Fred Piper and Sean Murphy. Oxford ; New York : Oxford University Press, 2002. 142 p. : ill. ; 21X30 cm. Very short introductions ; 68 Includes bibliographical references (p. 135-137) and index. Cryptography. Murphy, Sean, 1963- 01/2011TN GT 0 KTN True Đào Thị Thu Huyền G A SH Thư viện Trường Đại học Đà Lạt