AGRICOLA (National Agricultural Library)
AGRIS
AGRO
Arianta
Baidu Scholar
Cabell's Directory
CABI (over 50 subsections)
Celdes
Chemical Abstracts Service (CAS) - CAplus
CNKI Scholar (China National Knowledge Infrastructure)
CNPIEC
Current Geographical Publications
DOAJ (Directory of Open Access Journals)
EBSCO (relevant databases)
EBSCO Discovery Service
Elsevier - Reaxys
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Genamics JournalSeek
GeoArchive
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KESLI-NDSL (Korean National Discovery for Science Leaders)
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SIGZ
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TDOne (TDNet)
Ulrich's Periodicals Directory/ulrichsweb
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