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Published 1975
Electronic book from Proquest Ebook Central Academic Complete
Electronic
Conference Proceeding
eBook
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Published 1994
Full text available in Environment Complete: 2002 to presentFull text available in Academic Search Premier: 2002 to present
Full text available in EBSCO Open Access Journals: 2001 to present
Full text available in Springer Nature Complete Journals: 2012 - 2015
Full text available in DOAJ: Directory of Open Access Journals: 2011 to present
Full text available in PubMed Central (PMC) Open Access: 2022 to present
Electronic
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Published 2004
Full text available in Environment Complete: 2004 to present; embargo: 1 year
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