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Published 1984
Full text available in DOAJ: Directory of Open Access Journals: 2012 to present
Electronic
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Serial
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Published 2013
Full text available in Hindawi Open Access Journals: 2013 - 2014
Electronic
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Published 2009
Full text available in DOAJ: Directory of Open Access Journals: 2009 to present
Electronic
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Published 1954
Full text available in Springer Nature Complete Journals: 1998 - 2008
Electronic
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Published 1999
Full text available in EBSCO Open Access Journals: 1999 - 2016
Electronic
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12
Published 1998
Full text available in EBSCO Open Access Journals: 1998 to presentFull text available in DOAJ: Directory of Open Access Journals: 1998 to present
Electronic
Journal
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Published 2015
Full text available in Wiley Online Library Database Model: 2015 to present
Electronic
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14
Published 1986
Full text available in EBSCO Open Access Journals: 1997 - 2007
Government Document
Electronic
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15
Published 1985
Full text available in EBSCO Open Access Journals: 2011 - 2018
Electronic
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16
Full text available in GeoScienceWorld: 2000 to present
Full text available in JSTOR Life Sciences Archive Collection: 1975 to present; embargo: 6 years
Full text available in BioOne Complete: 1999 to present
Electronic
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