00850nam172200253 4500 36443 Messages secrets Marie Bertherat ill. de Frédéric Pillot LIV Toulouse Milan 1996 39 p. ill. 19 cm Carnets de nature 19 9782841133246 fre fre fre FR a zz 00|z| FR DEC 19980306 42448 BB Bertherat Marie Pillot Frédéric Illustrateur Cryptographie 793.7 JDO LIF LIF 951001242 793.7 BER 2021-01-05 00:00:00 0 LIV DOC JDO THI THI 950686045 diff 793.7 BER 2019-03-01 00:00:00 0