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X0@X0y1 数字和字母
X0@X0y1 数字和字母

2007-07-26

The Geometry of Information Retrieval
The Geometry of Information Retrieval

Van Rijsbergen, C. J. / Cambridge University Press / 2004 / $ 99.44

2007-02-08

The Cuban Missile Crisis, 1962
The Cuban Missile Crisis, 1962 : Selected Foreign Policy Documents from the Administration of John F. Kennedy, January 1961-Novem

Tim Coates / Stationery Office Books / 2002 / $11.00

2007-02-08