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21
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/26/2000 to 01/29/2001
Full text available from Engineering Database: 01/26/2000 to 01/29/2001
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电子
杂志
22
23
24
Full text available from Earth, Atmospheric & Aquatic Science Database: 02/01/2009 to 02/28/2017
Full text available from Engineering Database: 02/01/2009 to 02/28/2017
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电子
杂志
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出版 1974
Full text available from ABI/INFORM Global: 09/01/1997 to 09/30/2000Full text available from Military Database: 09/01/1997 to 09/30/2000
Full text available from Political Science Database: 09/01/1997 to 09/30/2000
Full text available from Research Library: 09/01/1997 to 09/30/2000
Full text available from Sociology Database: 09/01/1997 to 09/30/2000
电子
杂志