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21
由 Costanzo, Linda S., 1947-
出版 2007
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“...Physicians Licenses United States Examinations Study guides....”出版 2007
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22
Full text available from Earth, Atmospheric & Aquatic Science Database: 03/01/1997 to present
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23
出版 2003
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“...Science teachers United States Periodicals....”Full text available from Research Library: 01/10/2011 to present
Full text available from Education Database: 01/10/2011 to 06/10/2020
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24
由 Matthiessen, Peter,
出版 2015
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“...Biologists United States Biography....”出版 2015
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由 Gómez Carrasquel, Rosario.
出版 2006
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“...Human Genome Project Economic aspects United States....”出版 2006
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26
出版 1938
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“...Biology Study and teaching United States Periodicals....”Available in Education Source.
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27
出版 1994
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“...Mathematics Study and teaching (Middle school) United States Periodicals....”Available in Education Source.
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28
出版 2010
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“...Wildlife management United States Periodicals....”Full text available from Environmental Science Database: 04/01/2013 to present
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29
出版 1989
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“...Northwestern United States Periodicals....”Full text available from Biological Science Database: 12/01/2009 to present
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Full text available from Advanced Technologies & Aerospace Database: 05/01/1998 to 10/31/2003
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出版 1951
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“...Science United States Periodicals....”Full text available from ABI/INFORM Trade & Industry: 01/01/1998 to Winter 1999
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出版 2001
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“...Science United States Periodicals....”Full text available from Biological Science Database: 01/01/1998 to present
Full text available from ABI/INFORM Trade & Industry: Spring 2001 to present
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33
出版 1999
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“...Science United States Periodicals....”Full text available from ABI/INFORM Trade & Industry: Summer 1999 to Fall 2000
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34
出版 1955
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“...UNITED STATES. unbist...”Full text available from Advanced Technologies & Aerospace Database: 01/01/1988 to 10/31/2011
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35
出版 1938
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“...Biology Study and teaching United States Periodicals....”Full text available from Biological Science Database: 01/01/2000 to 11/30/2012
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36
出版 2002
“...West United States. fast (OCoLC)fst01243255...”Full text available from Biological Science Database: 01/01/2008 to 12/31/2017
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37
出版 2000
“...West United States. fast (OCoLC)fst01243255...”Full text available from Biological Science Database: 04/01/2009 to present
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