21
Full text available from U.S. Northeast Newsstream: 08/09/1999 to present
Электронный ресурс Газета
23
Full text available from ABI/INFORM Dateline: 01/06/1992 to present
Электронный ресурс Журнал
24
Опубликовано 1995
Full text available from U.S. Northeast Newsstream: 08/15/1985 to present
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Электронный ресурс Газета
25
Опубликовано 1985
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Электронный ресурс Газета
26
Full text available from Research Library: 05/01/2006 to 10/31/2017
Электронный ресурс Журнал
27
Full text available from Education Database: 10/01/2000 to 09/30/2001
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Электронный ресурс Журнал
29
Опубликовано 2000
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Электронный ресурс Журнал
30
Full text available from ABI/INFORM Trade & Industry: 07/01/2011 to present
Электронный ресурс Журнал
31
Опубликовано 1990
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Электронный ресурс Журнал
32
Full text available from ABI/INFORM Dateline: 04/26/2012 to present
Электронный ресурс Газета
35
Full text available from Research Library: 07/01/1998 to present
Электронный ресурс Газета
36
Опубликовано 2001
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Электронный ресурс Журнал