Energy

Wiley Online Library

Number of E-Books: 
21000+
Number of E-Journals: 
1600+

ARDI

Number of E-Books: 
20307
Number of E-Journals: 
7541

OARE

Number of E-Books: 
11335
Number of E-Journals: 
9394

Bentham Open

Number of E-Journals: 
58

World Bank Open Resources

Number of E-Journals: 
19000+

ScienceDirect

Number of E-Journals: 
613

DOAJ - Directory of Open Access Journals

Number of E-Journals: 
9440

SPIE Digital Library

Number of E-Books: 
400+
Number of E-Journals: 
11

Geological Society

Number of E-Journals: 
10

Pages