Telecommunication

Wiley Online Library

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

DOAJ - Directory of Open Access Journals

Number of E-Journals: 
9440

Springer

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

Optical Society of America

Number of E-Journals: 
21

IMF eLibrary

Number of E-Books: 
2910
Number of E-Journals: 
9

APS - American Physical Society

Number of E-Journals: 
12

AIP - American Institute of Physics

Number of E-Journals: 
19