TY - BOOK ID - 141509350 TI - Information and secrecy : Vannevar Bush, Ultra, and the other Memex PY - 1994 SN - 0810827832 PB - Metuchen Scarecrow Press DB - UniCat KW - Cryptography equipment industry - History. KW - Electronic analog computers - History. KW - World War, 1939-1945 - Cryptography. KW - Information scientists - United States - Biography. UR - https://www.unicat.be/uniCat?func=search&query=sysid:141509350 AB - ER -