Environmental Science

PNAS - Proceedings of the National Academy of Sciences of the United States of America

Wiley Online Library

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

OARE

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

AGORA

Number of E-Books: 
10000+
Number of E-Journals: 
9000+

World Bank Open Resources

Number of E-Journals: 
19000+

ScienceDirect

Number of E-Journals: 
613

DOAB - Directory of Open Access Books

Number of E-Books: 
17250+

DOAJ - Directory of Open Access Journals

Number of E-Journals: 
9440

Springer

Number of E-Books: 
12355
Number of E-Journals: 
2353

Mary Ann Liebert

Number of E-Books: 
16
Number of E-Journals: 
96

Pages